Andrew Luck was the number one draft pick last year and proved he was worthy of it by season's end last year. He also proved that he could handle taking over a job that was done extremely well by the guy he replaced...Peyton Manning. He has decent receivers, but needs to have better support in the run game to elevate himself even more in the rankings.
A lot of experts worry about sophomore slumps when it comes to quarterbacks, but with the game smarts shown by Luck, I think he'll have no problem repeating or improving upon last year. He's currently ranked in the 8-9 range, but I have him up in the 7th spot. He'll be more comfortable with the offense this year and his offense will be more comfortable with him, which should make for some improvements in his game across the board.
Matt Schaub is a decent quarterback. He has nice weapons, especially Andre Johnson. The problem is that his number one weapon is Arian Foster, a great weapon for a QB to have that extra time in the pocket when he wants to throw, but not so great from a fantasy football standpoint if he wants to increase his stats. Schaub will probably never get you a ton of points, but should be a consistent one TD guy with a second here or there and a decent amount of yardage each week.
His ranking is in the 15-21 range and I have him at 16. He should come in handy as a bye week replacement, or insurance for your starter. He'll probably have a couple weeks in the top 10 statistically, but the problem will be figuring out which weeks that might be. If he falls to you at a decent time in draft, grab him, but I'm not sure he's a guy I would target or go out of my way to try and draft.
Jake Locker has shown flashes of brilliance, just not enough to convince many people that he deserves a high ranking. Some of that is poor decision making, and some is his supporting cast. He has some talented wide receivers, and if they can stay healthy, along with Chris Johnson returning to form from a couple years ago to take some pressure off his shoulders, he should blossom into a solid starting option.
His ranking right now is 25-27 but I'm ranking him up at 21. I see his potential to not only throw the ball, but make plays with his legs and lead his team in a division with a couple weak secondaries he gets to try and exploit twice. As a seasonal player, he's worth a gamble with a later draft pick, but I think his real value is in dynasty and keeper leagues, where he will be a top 10 guy in the next few years.
So who will be the quarterback in Jacksonville this year? Honestly, I'm not sure that it matters. This offense is based around Maurice Jones-Drew and neither QB, Blaine Gabbert or Chad Henne has shown much in the way of being a solid fantasy football player. Henne definitely had a couple great games last year, but it's a guessing game as to when those might occur. Neither is a starting fantasy option and both should be avoided in drafts.
Some experts rank Henne and some Gabbert in their top 32 so "Jacksonville QB" gets a ranking of 30-32. I'm giving the edge to Henne, as I think the coaching staff may finally have decided Gabbert may not be the franchise guy in Jacksonville, and ranking him at 31. Probably not a draftable option this year unless you're in a 2 QB league and you want him for a bye week.