I went through what you are currently and did the research. Durablue is about your only reliable option for quality axles with a good warranty. Please check out my 350x rear end rebuild thread here: http://www.3wheelerworld.com/showthr...ching+out+350x
It should hopefully answer a lot of your questions and provide some good information. And yes the anti fad brake hub from durablue is well worth it. If you have any questions feel free to pm me.
85 Kawasaki KLT 160
85 Kawasaki KLT 110
82 ATC 70
2000 Scrambler 500