[stum]

I wouldn't go that far..

I will say in a given amount of weight and space it seems the 4s 8000mah give you the longest run time of any typical setup. I run my erevo on 4s every day and it's MORE than enough voltage.. and it is more than enough for any truggy as well. The difference between 4s, 5s and 6s is in reality very little.. the difference between 4s and 8s or better on the otherhand is a bit more worthwhile. I ended up with a Neu 1515 2.5d by error and decided to keep it, the motor was nice but it ran too hot on 4s racing due to the low RPM's so I HAD to move that motor up to 5s just to keep it cool and effecient (in my 8ight-t). My Neu 1515 1.5d can however run on 4s at speeds from 40-50mph w/o heat issues in my erevo which is the same size as the truggies. I gear the 1.5d for 40 and it's very low temp but I do that because I race and 40 is MORE than enough on a track.. at 50 it's just way too fast and causes slower lap times due to less control. I can run it geared for 50 all summer though with temps on the hottest never exceeding 180.

So what does it all mean? Just pick the right voltage for the motor you want... LOL it's pretty much that simple in this voltage range. PS the 2s lipo's are in hard shells for racing and super durable so you may want to lean that way for that purpose alone. I will also say running a pair of 2s 5k, 6k race lipo's also keeps your options open for running your packs in a larger array of vehicles. Many Many good packs out there now... and if you want single packs Losi even makes a hard packs 4s as well (not many of those out there yet).

my2c