Hello everyone. Next week I'm going to purchase the XL5 Rustler. I know it comes with a 3000 Mah Battery, but whats the best Nimh battery I can get for longer run time in which the Titan motor will be okay to

The Traxxas 7 Cell 5000 Mah 8.4 volt and the 7.2 volt Tenergy 3800mah are the ones I've recently looked

(Will eventually switch to Lipo in the future by the way)