6 volts provides more speed and torque, but less duration. If you switch from 4.8 to 6 volts you always need to add 25% or more to the battery mAh rating. You seem to have adequate torgue at 4.8 volts, just make sure you use at least an 1100 mAh onboard battery to handle the extra draw of the digitals. If you want to go 6 volts, use a 1500.

Jim

OBTW, the Skyshark weighs the same as the Pacific, but the Skyshark wing is a lot smaller. Which one do you think will land faster, tip-stall easier and fall out of maneuvers more often?

J