Locking differential brand recommendations

[Tom W]

Ok guys, here is the situation. My car is a 69 Mach with 428 CJ. I just finished my C6 to 4 speed toploader conversion. Everything is working great so far. When I bought the car it had a 3.91 gear in it with an unknown locker. I am changing the gearing to the 3.50 that it originally came with and while I’m doing that I might as well replace the locker. I have done all the research and have decided to go with the helical gear limited slip differential instead of the more common clutch pack style. My question is, does anyone have any recommendations on the brand? The pricing varies quite a bit and I can not find a website that has any kind of ratings or rankings of the different brands. I always check ratings before I buy pretty much anything. Any help you guys can give me will be greatly appreciated.