I love these a-arms, I have the +2 standard travel.
pros: grease-able end bearings that dont wear out in 5mins like every other a arm heim joint on the market.
high quality FRAP ball joints
Cons: have to pull the a arms back off to get grease to penetrate the seals when your greasing them. still way better then any other a arm on the market though.
I ride pro am xc and these a arms will be first on my list for every build.