First off, if it's nitro it'll have glow plugs and never be 100% waterproof (don't submerge it).
Out of the 2 you have listed, I'd get the Losi. Traxxas has been upping their prices lately but not really making any improvements or upgrades to justify them. Don't get me wrong, I'm not hating on Traxxas, they make decent trucks but for the money now, you can get better. The Losi is about $60 more and I believe it'll be easier to work on, and has a better engine, the 3.3 is know for being a disposable engine. Go to the Losi website and read up on the truck, you'll have to go to the TLR site though, they have a link on their homepage. Another thing you'll find, is the fact that most people will ditch the electric starts on both rigs. I use pull start and an ignitor on all of my trucks except my XXL, it has roto start and an ignitor.
Last edited by SchrodeMode; 11-21-2012 at 03:19 AM.