I've had both (nitro convert to electric and now the new e-revo) and if you want my better recomendations, go for the e-revo
The only down side, is that you'll have to run 2 packs.
So if you have your li-po and don't want to buy another one, go for the conversion, but if you can afford 2 new li-po pack, believe me, go for the new e-revo, you'll fall in love with this truck