seems like the lockright or the aussie are your top choices. i've heard a lot of good things about the aussie especially for the price. have you considered a selectable locker or is that more than you want to spend. or if you already have the gears out maybe something like a detroit they are cheaper than a selectable but stronger than a lunchbox locker.
83 CJ7 350 tbi, TH350, D300 twin sticked & clocked, narrowed Chief D44 Eaton Elocker & Moser shafts, Explorer 8.8 Detroit locker, 410's, RE 4.5" spring lift 1" body lift, 35" Claws, cage tied to frame, Corbeau baja seats, HD tie rod and draglink, u-bolts flipped, custom skid plate and sliders, Warn 9.5ti winch with Amsteel synthetic line
85 CJ-7 150 ci with T-4 in front of a Dana 300, 33s mounted on steelies with 2.5" spring lift plus 1" Currie Rock Crusher Shackles. 4.56s front and rear, locker up front
well I got the new Dana 44 front end back from Mitchell's ,they are right up the street from me.A buddy and I installed the Spartan when I pulled the chuck out to take the axle to the shop. The Spartan locker was a easy install. Can't wait to get t out on the trail.