I must confess I've been running my cars around with cheapie 1500mAh stick packs. Today I was in the hobby store buying a new ESC for my F103 car (the one in it went to my newer kit - musical ESCs while I saved up), and he cut me a 2 for 1 deal on a couple of matched 1500mAh packs. Since my charger only handles NiCds, and only up to 2000mAh, I figured why not.
The difference is night and day. I charged one up, and on its first charge it lasted at least 20 minutes of run time with no reduced EPA on the top end throttle (which is how I normally run this car; it's powerful even with the cheapies), and I was cutting donuts on smooth asphalt as if I were driving in a bowling alley.
Now I need to take that and multiply it by 2 to imagine the power some of you guys put in your cars. Now to see how long one lasts and how well it performs in my 4WD kit that still has plastic bushings
p.s. I'm also really loving the longer forward trigger pull on my 2PL. My Magnum Jr has the same distance forward and back, and it's way too sensitive for this RWD at full EPA.