There are no builders in Canada for PVC bottoms as far as I'm aware. I like the idea, it makes sense, but you'll have to bring a tank up from the States if you want this kind of build.
Regarding acrylic, here's a few first page links off the RC search engine:
http://www.reefcentral.com/forums/sh...ostid=11428532
http://www.reefcentral.com/forums/sh...hlight=tenecor
http://www.reefcentral.com/forums/sh...hreadid=790161
There was a point in time that I was dead set on acrylic being the superior material. We were fairly close to bringing in acrylic tanks, then I did some more objective research and found that the increased costs of acrylic is rarely worth the time/effort.