those servos seems to get a great review and are priced cheap enough to buy a few at once... even with the surprise cross border duty!?!

I have been running a 6 cell minh 5100 mah which usually lasts about 45 - 1 hour with the stock 2200 as a back up and looked into 3s lipo but after reading various forums sounds like quite a few SC stock esc's where burning up...i figured that most stock esc's probably may last 6-10 months (pulled that # out of the blue) but after it goes it may be a good time to upgrade to lipo with a esc that is designed for it, perhaps you have another suggestion of a good esc ,lipo compatible, with 4 wheel steering