Granted it's been a few years now since I've fished either, but Figure Eight and Sulphur Lakes both offer very good fishing for Trout. Both lakes are within an hours drive of the town of Peace River also.
Figure Eight lake has Rainbows and possibly some Brown Trout as well, although I know they stopped stocking Browns there several ago.
Sulphur lake contains Rainbows and Brookies.
Both lakes are quote popular and are easy enough to find should you decide to give them a try, but feel free to PM me for directions if need be.
Good luck!