I've heard both good and bad about Indochino. I'd be willing to give them a shot.
Three online suit places I wouldn't mind trying:
1. Indochino
2. ProperSuit (
www.propersuit.com)
3. Astor & Black (
www.astorandblack.com)
I've got a bit of experience with higher end suits, particularly Oxxfords I own, so I'm interested to see the quality of Indochino up close. Considering ProperSuit and A&B give the option of E. Zegna fabrics and full canvas, I'm not too concerned there.