I posted this in a different thread, but its probably more appropriate here:
Baker Mayfield is the best player in the draft in my opinion, and the best QB to come out in at least 3 years. His height is the only negative I see about him, and that is a flimsy one at best, since it can be schemed around. Mayfield has a great arm, great accuracy, and top notch competitive spirit. He's also an outstanding decision maker, and knows when to take the shot, and when to check down. I hate comparing unproven rookies to hall of fame caliber guys, but man does Mayfield remind me of Drew Brees.
Sam Darnold is the prototype NFL QB. His measurements will get him drafted ahead of Mayfield, but his talent isn't that far behind. He's the #2 QB of the last 3 drafts in my opinion. He's a little less NFL ready, and would be best served sitting behind a veteran for a year. Giants would be a perfect fit in my opinion, but it sure sounds like he's headed to Cleveland. He's got very good arm strength and can fit the ball in windows many QB's wouldn't dream of, of course that also gets him into trouble sometimes. In these ways he reminds me of another former USC QB, Carson Palmer.
Josh Rosen brings a lot of similar things to the table as Darnold, but I think he's closer to a finished product than Darnold is, and likely has a lower ceiling. He's another guy who can fit balls into the tightest of windows, but sometimes makes odd decisions and throws balls that are basically impossible to complete. If I had to make a comparison I'd say Matthew Stafford. Like Stafford, he may be best served to be behind a veteran initially, Stafford never had that luxury, but I feel he'd have benefited from it.
I'd take all 3 of these guys over Barkley without a second thought unless I was set at QB. I also like Quenton Nelson and Derwin James more as well.
I like Mason Rudolph a lot as a nice consolation prize for somebody who waits a bit at QB. He's very accurate and has an underrated arm. He really impressed me with his ability to keep his eyes downfield when pressured. I think he's being unfairly punished because he had great WR's and played in a conference that doesn't play much defense. I'd profile him as sort of what Matt Schaub once was.
Lamar Jackson is a lot more of a sure thing than he is given credit for, but conversely, I think his ceiling is actually a bit lower than most. He's not accurate enough to be a fit for what a lot of teams want to do. He's on the Michael Vick/Tyrod Taylor spectrum. Taylor is probably his floor, but Vick is probably his ceiling. If he goes to a coach who is willing to accept that, and not try to square peg round hole him, he should be a solid NFL starter. He's also a guy who I think could be thrown in instantly, where you deal with the inconsistency and let him take his lumps, because of the big plays he'll bring.
Josh Allen screams bust to me. But, he certainly has everything you look for when he's doing 7-on-7's in shorts. Big, strong arm, mobile. His accuracy and decision making scare the hell out of me. I look at him like this, 5% chance he's Luck, 35% chance he's Bortles, 60% chance he's Locker. I'm 100% confident some team is going to convince themselves they can get the Luck result, and that will lead to him being incredibly over drafted. He's not a guy I'd take in round 1 personally.
A sleeper I like is Luke Falk, he doesn't have a strong arm, but is accurate and usually makes good decisions. He does have a tendency to check down too quickly, but he's a great flier for a team with an older starter, but doesn't want to make big investment. Chargers? Steelers? Saints? Patriots? I could see him being a discount Andy Dalton.
Overall, I think this might be the best QB class since 2004.