Last I heard - and please note that I've only flown the electric, so my opinion may be worthless - the electric version is the one to have. I'm not sure that there's anything wrong with the nitro model, I think it's just that people have been so impressed with the power of the electric one. On that note, and having flown the 600E on many occasions, I can assure you that you wouldn't be disappointed with the electric version if you can afford the batteries

Merely my $.02,
- Chaz