I use an
iMax B6 Quattro charger for all my car/plane lipos. So far, no issues at all. My pit space is much cleaner with one unit, rather than 2-3 chargers. Just keep all your wires organized and make sure your power supply is strong enough (24amps). The charger comes with one Thunder Power style balancer and one "SMC" style balancer... so, you may need to buy more balance boards on your own. I recommend this charger to all my customers and have had no complaints.
The only downside is... if you ever need repairs, there's goes 4 chargers. haha. For repairs, you generally return it to the store you purchased it from. They'll take care of it for you (return/exchange). My importer said they would exchange it for a new one.