I recomend Thunder Power batteries. Their new 45C units can be charged at 6C which probably exceeds the amp rating of most our chargers. Like for a 2250mah 7.4v lipo for the merv you can charge it at 13.5 amps... Lol, takes only 12 minutes or so to charge, feels like old skool nicds! A huge 5000mah pack for the e-revo or e-maxx could be charged at 30amps. Going to need some serious wire for that
Super high C ratings mean that under load the voltage from the batteries is higher. Higher voltage = more punch and speed. Like a 15C battery would let you do wheelies sometimes, a 20C more easily and a 45C would wheelie on demand requiring the driver to actually pay attention to the throttle. I'll never say no to more power.
The cells maxamps is currently pushing is similar to the Thunder Power cells... Well, similar in their specs but there is no way I'm paying 2x the cost to find out.