Gears - Is spicer the only reputable make?

I'm looking for 4.56's for my CJ7, dana 30 front, soon to be dana 44 rear end. Prices quoted to me for various brands vary from $115 to $180.00. Genuine gear has a lifetime warranty thru some dealors and I can get front and rear set plus install kits for around $400.00. Any opinions on their quality or other makes?

Tim

84 CJ7, 258, HEI, M/C 2100 carb, 5 inch lift, RS9000's, 33x12.5 BFG M/T's, Lockright, full cage & belts, Xenon flares, AMC 20 1pc axles, GM dual diaphragm brake booster