Problem with test only is, that eventhough it seems to work like a charm for some - there is many of us who don't get that much from test only unless the dosage is HIGH, and that brings out big side effects too.
I know lots of guys who could do an 500mg/w or 750mg test cycle and
all they get is little bit of more "ripped" look maybe, and they are sweating big time and looking flushed, 24hours a day. But when they add some anabolic compound to it, together it works nicely!
I do see test only as an necessary drug to keep libido and stuff working while taking some anabolics to gain, I would never do it alone unless the dosage would be 750-1000mg/w but in that case the side effects would kill me.