Just came across your thread and I must say the hyperion duo is hands down the best charger I've ever come across. For your use where you will have 2 7.4v 8ah that need to be charged you wont be happy with a 50 watt max charger. Charging one of those batteries at 1c will max out that charger. With the duo you can do both and 1c, or even 1.5/2c if you please and will do it happily. I've bought 4 chargers, till I finally realized I should have purchase the duo from the ghetgo. Now that I did, life is much more convenient.
PS. Revo is on its way!
HopMeUp is my friend, RcBoyz is the devil.
8ight losi conv MMM 4s Neu 1.5d
8T losi conv MMM 5s Medusa 60-1600-v2
E-revo MMM 4s Feigao 9xl
losi baja lst2 mamba25
xray m18 MM pro combo