I know some will hate on Turnigy, but it's all ive ran for Lipos and havent had 1 problem with them.
If your not familiar with hobby king, you can get a lipo charger and lipos for the same, if not cheaper than a good nimh.
spend about $50 on the charger/power supply, and a 3s will be around the $35 mark and youll have speed for days.