Non of these are terrible 3rd OF options, but I'm leaning Wells, as I think his ceiling is the highest of the bunch. That said, however, why not draft another position and take what's left of these OF's with your next pick? I find it highly doubtful that all of these guys will be gone, and the degree of seperation from Wells to say Abreu or Damon isn't all that great, nab something of more use now, and grab what's left with your following pick. I'd consider nabbing a top notch stable closer with this pick, maybe rounding out your OF with your next selection, and then dipping into the deep young starters and grabbing a bunch of them with your next few selections. To be honest, I'm not sure why you are hell bent on getting your 3 OF right now since I would imagine useful guys like Milledge, Ethier, Co-Jack, Dejesus will all be available later and I see no arms on your roster to this point. Good luck, hope another line of thinking helps.
I forgot to mention it is a four by four league. I do also have three closers. This is actually the first round. We have 10 keepers. I have the fifth pick. THe top players left for me are these outfielders, Joe MAuer, Mike Aviles, Aubrey Huff, Edwin Encarnacion, Adrian Beltre, Roy Halladay, Rich Harden, JOnathan Broxton, Edison Valquez.
I would take Mauer. Most guys don't like picking a catcher so early, but the OF's you listed will be average for their position. Mauer most likely will be among the top 2 or 3 at his position. Mauer is also a better option as a future keeper than any of the OF's you listed in my opinion.