Without it pooty modded, and with both broken in, I'd say they're equal in smoothness. Comfort is fine for both, ergos is technically better on the luxe, I don't notice it in game anyways. The clone gt, unlike the luxe however, will have very good efficiency compared to the luxe, easily 1400-1600 shots. However, there is alot of orings in the bolt, though maintenance is easy for both. Hold both, but I'd go for the clone gt, which I did, as I had an identical choice to yours. Either way you'll enjoy your new gun, gluck.