Buy High
Demaryius Thomas - Has obviously become's Peyton's go-to WR and almost had a TD in week 3 and could have had another this week had he not fumbled. He's a threat to go off for 100 yards + a TD every week and I think he'll be a top 5 WR from here on out. Look at his current numbers and imagine if he actually had those 2 TD's(week 3 out by inches, week 4 fumble) stats. Buy while you still can.
Brandon Lloyd - Also looks like he's become Brady's favorite weapon(10 targets per game). He's also narrowly missed a couple of TD opportunities and I expect that he and Brady will connect soon enough and the TD's could come in bunches. Will definitely put up a ton of yards. I think he'll be a top 15 WR, potentially top 10 or 5. Definitely a player who's value could still rise even higher.
Julio Jones - He's still in the "buy high" category for me since he's still going to be highly valued despite a couple of subpar performances because of all the pre-season hype. The Falcons have a nice schedule with bad defenses and shootout potential(including WAS, OAK, NOx2, TB, CAR, YG and DET) and teams aren't beating the Falcons despite trying to take Julio out of the game. I still believe that he's going to be a top 5, maybe top 3 WR from here on out.
Reggie Bush - His schedule over the next 7 weeks: @CIN, STL, BYE, @NYJ, @IND, TEN, @BUF. This guy is going to be a absolute stud in all formats over that stretch and could carry you into the playoffs. Buy now while the price is reasonable.
Buy Low
Ryan Mathews - His owners(including myself) are all panicking at least a little, whether they'll admit it or not. Especially if they're sitting at 1-3 or 0-4. Jackie Battle is a mediocre plodder, he might get GL carries but so did Tolbert last season and Mathews still finished the season as a top 10 RB. A rare opportunity to buy low on a stud RB should never be passed on.
Steven Jackson - RB's who get a high amount of touches are always valuable. S-Jax has been battling injuries this season, but I expect him to bounce back as he gets healthier. Jeff Fisher loves to run the ball and has been known to give a heavy workload to his starting RB's. They have a tough schedule ahead, but Jackson performed quite well last season against some of the tougher run defenses, his per game averages remained at around the same level so there's still a good chance he could be a top 15 RB from here on out.
Darren McFadden - He's faced a pretty tough schedule, Pittsburgh is always tough, Miami and SD both have very underrated run defenses. The Raiders O-Line and blocking scheme is a serious concern but this guy is one of the most talented players in all of football when healthy and his schedule the rest of the season(including JAX, ATL, KC(2), NO, CLE, CIN, DEN, CAR) looks very promising. Buy low on a RB who might just be a top 5 RB from here on out.
Hakeem Nicks - This one is a little tricky and high risk because knee injuries are always concerning. However, if your sitting pretty at 3-1 or 4-0 and the Nicks owner is struggling at 1-3 or 0-4 you might be able to pry Nicks away at a nice discount(WR15-20 type price) and stash him for a few weeks down the road to pair him with your current WR1. Aaron Hernandez is a similar option, but the upside is not as high.
Sell While You Can
Chris Johnson - A very impressive performance against a top defense, I think Hass makes this offense better but I'm still not a believer. CJ hasn't looked the same to me since he's gotten paid and the Titans O-Line and playcalling is also suspect to me. Some people out there believe that he can still be a top 15 RB, move him at that price while you can.
Andre Johnson - This might be a week late, but his name still carries a lot of value and many still view him as a top 10 WR. I think he finishes around WR15 this year, he doesn't look the same as years past and Schaub is spreading the ball around. The Texans don't have to force the ball to AJ when he's being keyed on by defenses anymore and add in the injury risk with AJ and I'd be selling. Especially if you can get someone like Demaryius Thomas for him.
Philip Rivers - Just doesn't look like the same QB anymore. His O-Line and lack of weapons isn't really helping his cause either. Only worth starting based on matchups at this point in his career. Not a top 12 QB anymore, but may still have top 12 trade value.
Sell High
Steven Ridley - With the rise of Brandon Bolden, I don't think Ridley can be trusted as a top 20 RB(RB2) anymore. Woodhead and possibly Vereen will also get touches and Ridley isn't really talented enough to separate himself from the pack. McDaniels clearly plans to use his RB's depending on the opponent and situation every week which makes Ridley tough to trust and rely on. I realize that he;s coming off of a great game(as is the entire offense), but the Pats won't play the Bills every week and put up 50 points and a ton of rushing yards. Sell high.
Just my opinion.