If you want n/a power and either have a ton of money or want to deal with a BITCH of a swap, BEAMS 3sge is without a doubt the way to go.
However, that gets incredibly expensive and difficult, so gen 3 3sgte is a great way to make some extra power on a budget. I'm actually planning on picking up that gen 3 and LSD kit from EMSpowered for myself as soon as i get the dough...