I thought it would be constructive to list the no doubt about it, every-week fantasy starters at the quarterback position. Sometimes owners out-think themselves and might sit a stud QB based on a tough matchup, and I'm here to tell you that unless you are in a ridiculously shallow league or if the stud QB has injury issues, there's no way you should do that. In any case, here are the QB's that I feel are unbenchable each week (unless they have a bye of course).
Peyton Manning, Aaron Rodgers, Drew Brees, Philip Rivers, Tony Romo, Tom Brady, Matt Schaub, Ben Roethlisberger
Manning, Rodgers, Brees, and Rivers should all be absolute no-brainers for everybody. Tony Romo is an overrated QB in real life, but in fantasy the guy has always been a stud performer, despite the occasional mind-boggling gaffe, and with as much talent as Dallas has among its aerial weapons and the fact that play-caller Jason Garrett leans heavily to the pass, Romo will put up numbers even in the toughest of matchups. Despite the loss of Randy Moss, Tom Brady will put up numbers in a spread-the-wealth passing attack, and with a lack of talent at the RB position, Tom Terrific will be airing it out most weeks. The feeble New England secondary only helps Brady, because there will be plenty of games where he will have to put up a lot of points to keep up. And with Matt Schaub, everybody's getting healthy again in that Houston offense, and should be at or close to 100% coming out of their bye this week. Left tackle Duane Brown will return from his suspension in Week 8, greatly helping out the pass protection; Andre Johnson and Jacoby Jones appear to be over their injuries; and Owen Daniels has shown increased productivity over the past two weeks. Schaub may not be quite as good as he was last year because of the presence of Arian Foster (hey, the Texans can actually run it now!), but he is a guy that will produce for fantasy owners regardless of matchup. And finally, Big Ben should be welcomed back with open arms by fantasy owners. The Steelers are incredibly balanced on offense, and aggressive offensive coordinator Bruce Arians will not shy away from stretching the field with playmaking WR Mike Wallace and relying on Hines Ward over the middle (and Heath Miller too, to a lesser extent). Big Ben probably won't put up last year's gaudy numbers because the defense is so much better, but he is incredibly safe week-to-week.
In two-QB leagues, I would consider the following QB's every-week starters as well:
Kyle Orton, Michael Vick/Kevin Kolb, Eli Manning, Matt Ryan, Donovan McNabb, Matthew Stafford, Joe Flacco, Jay Cutler, and Carson Palmer.
I don't trust Orton as one of my every-week-no-matter-what starting QB's because he has a history of second half fades, but there's no question that Denver's strength is throwing the ball, and with a relatively bad defense, he'll need to throw to keep up. You'll certainly want to keep riding him while he's hot, and I don't think he will fade this year as much as he usually has. Whichever QB will get the nod for the Eagles each week is, at worst, worthy of a two-QB league start; if it's Vick, he becomes an every-week automatic. And if it's Kolb, he has the talent and the weapons, and a coach that likes to throw more than any other in the league, to put up at worst #2 QB stats. Eli Manning pilots a great offense that's very balanced, with wonderful aerial weapons, so it's hard to imagine him ever being outside of the top 16 or so at his position in a given week. Matt Ryan tends to play better at home, but with a guy like Rowdy Roddy White at his disposal and old reliable Tony Gonzalez at TE, it's tough to see him outside of the top 16 as well.
McNabb hasn't thrown a lot of TD passes to date, but that should change and he is more than serviceable as a second QB for his owners. Stafford is intriguing as a high-upside guy in an explosive offense, so don't forget about him just because he hasn't played since Week 1. All indications are that he will be back in Week 8 after this week's bye for the Lions, and if Shaun Hill could produce so well for fantasy owners, there's no reason Stafford can't exceed that. Flacco Flakes (yeah, sorry Doug Flutie) is kind of like Eli Manning in that he pilots a very balanced offense with a lot of talent, and the addition of Boldin has really helped. He's a very safe second QB option. Cutler may not have blossomed into that stud QB that people thought he would, but nonetheless he is still a high-upside guy because of how much Chicago offensive coordinator Mike Martz likes to throw. Especially in leagues that don't penalize for interceptions, Cutler wouldn't be outside of the top 16 in a given week among signal callers, and in many weeks he'd easily be a top 10 option. Finally, as much as I don't like Carson Palmer as a real-life QB (the guy's playing awful football), the fact is that he has two good WR's at his disposal (as well as emerging TE Jermaine Gresham) and a play-caller, Bob Bratkowski, that thinks Palmer is still as good as he was 5 years ago, so Palmer is a guy that should continue to post decent fantasy numbers. And it's not like the Bengals have anybody better than Palmer on their roster, if he continues to stink it up.