[Mouton]

If it is a Futaba 3PK, KO Propo EX-1/10 or a Sanwa M8/M11 it may feel top heavy and unbalanced if you get LiPos. A stick type transmitter is less affected by the lower weight.

I was about to change to LiPos in mine but went for GP ReCyco NiMhs instead and I do not regret it for a second. The balance stays the same, there is no self discharge - equal to LiPos, which should be storage charge if you will not use the for a while and given their capacity they last far longer than any other high quality NiMh cell. They even last longer than the more expensive Sanyo Eneloop cells I got for another transmitter. I cannot remember when I last carged them. However, in all fairness, since most of us still need to charge the LiPos in the car the day before a race it really is not that much of a problem if the transmitter needs a recharge every now and then, is it?

Charging LiPos via the transmitter charge port? That means you never balance the cells? I would advice against that as all LiPo packs could do with a balance charge every now and then, not only the drive cells in the car.