What is the best battery charger for RC cars, planes, helis batteries?

I will be using LiPo batteries mostly. I'm looking for the Cadillacs of chargers/ballancers out there.

Thanks.

http://www.southwatercycles.com/products.php?plid=m48b279s606p25646&rs=gb
Chargers two batteries, upto 20 amps. I'm sure you can find a US site for it.