I have been running an OFNA 1600 MAH NIMH Pack in my Matrix buggy for over a year. It has worked flawlessly and I love it. I easily get an afternoon of racing out of the one pack with no hiccups. I recently blew my steering servo and a lot of the reviews I have read of the high torque servos out there say to step up to a bigger receiver pack size to increase run times.
SO:
Is this true? Yes, I could just buy more packs but will the 1600 mah pack not be enough for high end servos?
The largest NIMH pack I can find anywhere is 1600 MAH. It seems as though noone is making larger ones in the small 5 cell hump pack design. Does anyone or am I stuck???
Thanks for the info!

Yes it's true that 1600 is the largest receiver pack made with 2/3A cells, but you can also fit a 5 cell 3+2 hump made with AA cells which are available at any hobby site pretty much, that can give to 2500-2800mah, another alternative which you probably aren't after would be to go with a 2000mah 2S Lipo and regulator, that will give you also about 2500mah (because of the lipos properties being regulated down) of battery power. Check out A Main Hobbies battery selection.