I would not use GPU because u will miss your internet bandwidth for the little profit from it. I have a baikal mini i love it, a antminer U3 63gh batch 2 and 3 gridseed g-blades I wish i had more hashing power but these are not bad.
Internet bandwith? I'm running two gpu rigs and neither uses any more bandwith than my ASIC (none of them use a noticeable amount). My rigs certainly cost more than my L3+ and make less per day, but they also will continue to make the same amount for far longer than an ASIC.