From an uneducated and inexperienced.
I'm also on the market for better cells to race right now.
I only have used Duratrax 1500 packs (cheap sanyo cells), Radio Shack 3000 packs (generic brand, made in China), and Team orion 3000H cell packs (sanyo).
My experience with sanyo NiMH cells so far is satisfactory to say the least.
I barely touch NiCD packs. (I guess mostly because of the run time and reusability in a day). I only use NiCD packs to practice at the parking lot.
I'm going to try sanyo 3000HV cells.
I thought about Sanyo RC2400 cells (for being the punchiest - many people claim and proven in the race), Panasonic 3000 SMH (for being first and staying competitive enough in the race so far), Sanyo 3000HV cells (for lots of great recommendation, review, test result, etc...)
First I wanted to go for RC2400 then my experience with NiCD cells really made me look at NiMH for being pretty maintenance free and being reusable many times in a same day.
Maybe I'm gonna buy 6 RC2400 cells to try it in the race once I gain enough skill to be competitive in the race just for the heat.
Second, Panasonic 3000NiMH. Simply my cheap charger (MRC super brain 959) can't handle the sensitivness of the cells I'm afraid. (low peak voltage drop)
Third, Sanyo 3000HV. I used 3000H cells for 2 weeks now. I really love them already. Pretty much maintenance free (less recycling required). I recharged and used as many as 10 times a day. I didn't detect any decrease in performance.
My charger peaks them pretty well (I charge them at 3.0 ~4.5A, 10mV). They are very solid and consistant eventhough I can't say that they're punchier than NiCD cells. I'm very satisfied for now. I think 3000HV would cure 'less puchier' part of the problem.
Power stays almost same till the pack's dumped while NiCD cells show decreasing power curve as it's discharged.
It won't matter much if you can find right gear ratio for the race to extract the best out of them though. But anyways less worry involved for people like me (carefree).
Thanks for reading blah, blah,...
Just wanted to share uneducated opinion since I'm also on the market. (I have a feeling that I already said this.)
Anyway, I'm going to at lease try out 3000HV cells, since millions people recommend them.