For scale flying, I think electric would be a good conversion, better sound and a better look with no smoke - and no oil to clean off.

But for sport / 3D I think you have to factor in crashing to your equation. One crash could totally wipe out your very expensive battery pack(s). The WORST crash I have ever seen on a nitro required a new crankcase for the engine - about US$30.

Apart from that, I would really miss the smoke and noise from my Raptor - brute, in-your-face power is what it's all about!!