Jonathan,
Like we were talking about at The Shop the other week when you were broken, there are a few ways to accomplish what you want.
First the Dana 60 may be $500, but you'll still need wheels, gears, better outers and hubs/flanges, driveshaft work, etc. So that $500 will actually snowball into probably closer to $1500 or so. Then you'll probably want a matching 8 lug rear and that's $$$ as well. Like you said, those 36's with 1 tons will really hurt your clearance too.
The other option is good Dana 44 shafts and good joints that won't break. Go with the USA made chromos from ECGS and superjoints. I know you were saying you can run Spicers and get a warranty once from them, but you'll still be having the same issue- breaking joints. Only way to solve that particular problem is to address the specific part failure.
My suggestion is to buy a set of good shafts (inners and outers) and Yukon Superjoints. Make sure your steering stops are set so the joints aren't binding at full lock and keep a spare lockout hub or two with ya.