With a wrench, I'm useless. But I'm living in london right now, and will be for 2 more years, so having a LBS in Toronto isn't very helpful either. I've tried 49cm and 53cm Steamroller, and having short legs for my height, 49cm seems to fit me very well.
Sizing isn't the issue, and if I run into any problems with the bike, I'll be visiting LBS in London. But if I have problems with the frame, I guess it's better to have something within 2 hours reach than jensons...
I still can't decide, it would be easier for me to choose LBS if i was living in Toronto, but since I'm 2 hours away...

Maybe I can find some other bikes sold in London LBSs that I haven't tried yet. I haven't tried the KHS flite someone mentioned (if they still have some available that is), and if it's not as fidgety as langster (I want something i can ride in the streets too so)...