I was doing the same as you a little while ago. After trailing around all the forums and asking around I decided to get the Edge too. Also, the general view was to fit a gasser, so I got a BME 50 even though I already had an unused Moki 1.80. Like Columbo says, by the time you get the ignition and battery in there it'll weigh at least a pound more than it would've with the Moki, but, the gassers are real cheap to run, reliable and long lived. If you decide to get a gasser, get one with radial mounts, like the ZDZ. I overlooked this and now have to carry the weight of a Du-Bro Vibe Mount too!

Can't tell you how it flies cos' it aint finished yet! Couple of the guys here say they're great even at 15 pounds. There's a video somewhere of Sebastiano Silvestri flying one with a BME in it. It's cool. Anyone got the link?

Hope this helps,

Gez