I would get the Geo. I love my 2.1 and since efficiency isn't to much of an issue I would totally side with the 2.1. Plus the maintenance is much simpler and easier. Plus PE backs the gun up, with there amazing customer service. I say get the Geo but that's my 2 cents.
Joy Division DM13, Geo 3 Fluffy Bunny, Virtue Spire(Black), and Ninja 68/4500 Can You Feel It?