Haven't had it replaced in my E90, but I've had good luck with JN Phillips in the past. I prefer to take the car to them - regardless of their marketing statements, it's easier to do a better job in a controlled environment compared to the back of a van on a 10 degree day.
Absolutely insist on OEM glass. They should know, but remind them about the rain sensing wipers as well.
'15 i3 REX // Capparis // ZGW // ZTD // HK // 20"
20% Tint, Coding, LED High Beams/Signals, Painted Reflectors, MAX2 Hardwire
Past: F30 335i, E90 328xi