im about to pick up some air tools for daily professional use. i'm looking at these: 2135ti 1/2" impact 2115ti 3/8" impact 1215ti 1/4" ratchet 111 3/8" ratchet 121 air hammer 3108 die grinder any opinions? also, hows their warranty? I wasn't able to find much on it. and where's a good place to buy em (whos got good prices)?