espcarino,
good thing about lipos is that even cheap lipo chargers can do the job well. i personally use IMAX and LRP Pulsar 3. both do the job well, the IMAX much cheaper.
hope this helps.
p.s. please ensure you have good battery connectors. i found dirty deans would sometimes cause problems, with my LRP charging rate spiking up to 8amps on a 3amp setting. when i cleaned the connectors, charging was as expected.