just my own personal experince,and my good friend who has also had experince with them,they are slow to get your produsts,and not nearly as friendly to talk to and too busy to anser stupid questions.the people at trail tough have always tried to anser my questions and walk me through a project i may need help with. THEY WILL ALWAYS HAVE MY BUSINESS OVER CALMINI. i always got the impression from calmini that they thought they were better than i am and didnt have time for me. as far as quality,i bought a set of heavy duty axel shafts for front,wich requires a rear 3rd member. i had to transfer my 513s and locker to a rear carrier,the first 4wheeling trip i twisted both of them in half, on stock birbields!!!
not to mention they twisted off behind the seal ,calmini wouldnt let me drill and tap them out so i could thread a bolt in to pull them out,PIA that was a nitemare getting thoes things out ,jb welded a bolt to them 3 times each or more befor i finall got them out,then waited 3 weeks for new ones befor i finally went back stock,with birfield rings,from trailtough no more probs. just my experiences with calmini