Whats the best???

Neither, both are extremely poor choices, as Quadro cards are terrible for gaming, and are intended for development and heavy workstation application, also the R9 270 is underpowered for its cost.
What is your budget, what country are you in and what retailers are you using?
 


that quadro is roughly in the same ballpark as a hd 7770

out of the two choices the 270 is better


neither is high end, more like entry level gaming