The weight difference between the engines is not that significant. However, the DLE develops close to 1/2 hp more than the G20 and that is significant. If I had to choose, I'd go with the less expensive, lighter, and more powerful DLE. Ihave a DLE 55 on a 30% Edge and they are great engines. Ialso have 2 Zenoahs, a G38 with CDI and a G20 w/CDI. Ihaven't flown either one yet but, I'm getting close. Both Zenoahs are attached to used planes that Ibought or traded for. The G20 is ready for engine start, tune and flight (soon I hope) and it's on a Reactor Bipe. The G38 is on a GP 81" Super Chipmunk that I've repaired. The G38 starts and runs well but, needs a carb overhaul because it won't idle reliably. It sat unused for a while and the diaphragm dried out. Now it's too stiff to hold idle at low RPM.

Good luck and happy flying to all.

RJ