the quaife is great for the track.
I havent heard of those axles, I wouldnt upgrade till I knew I could break them, like after you break one. If you do break one stock replacements are pretty cheap to get from autozone till you can get the upgraded ones.
For aftermarket axles I'd look at:
http://www.driveshaftshop.com/HONDAPAGE.ivnu
http://www.raxles.com/index1.htm