I'd also checkout the icharger duo models, I have the big version and it's great, has a lot larger screen then other chargers and it's easy to use, you don't have to scroll through multiple screens to find the information or mode you want to use. The power labs are great and powerful charger but there screen is still harder to navigate through etc, both brands will serve you well and both will look after your packs better then any other charger, I don't believe people put enough emphasis on a good charger and how they look after/condition there batteries better, not to mention you'll be out on the track faster.

http://www.progressiverc.com/icharger-308duo.html

Cheers Justin