At the price I got it, I can't say there are any regrets, shifts like no other and it seriously makes the SRAM stuff look less appealing to me since this derailleur feels really solid. I'd do the deed and spend away in your position.

 sounds good

 My buddy has a saint mech on his while I have always had an X9. He has prefered my X9 over his saint, to the point where hes finally switching over to SRAM. MUCH crisper shifts, 3x lighter, no stupid axel required, etc. The only thing the saint has over SRAM is the durability. Saints can take some tough hits but I have yet to snap, break, or bend any X9.