Hi, I'm really probably not going to be all that helpful, but about a month ago when I thought I might be able to upgrade my speakers I started looking and Canton was one of the top ones I wanted to audition. Their website
www.cantonusa.com has their address and phone- 612-706-9250, their main US office is in Minneapolis. You could try calling them to see if they can give you local dealers information. I actually found a Canton dealer by contacting an RBH dealer who ended up to be looking for another line to pick up. The local Canton rep had asked him about picking up Canton, so when I told him I was interested in them he took the chance to get a couple of their bookshelves to audition. The dealer also told me of another local dealer who had several more styles in store to audition as well. I ended up auditioning their newer or current lines, mostly just bookshelves, Vento, GLE, Karat, and an Ergo tower. I have a more detailed description of the Vento and GLE at avsforum (if you want I can try to copy and paste the lengthy review here, we listened to several bookshelves that night).
The Vento is their top line, and the local rep told us he thought that bookshelf was their best speaker. We were actually pretty impressed with it, the imaging was really good as well as the range for a bookshelf. The GLE is their bottom line and pretty new yet, and it sounded pretty good compared to more expensive bookshelves (GLE is around $500ish, listened to some $800-1600ish), but it did have a different sounds that took a little getting used to. However, both sets of speakers were brand new out of the box, and Canton is a manufacturer who recommends a break in period.
I heard their current lower level bookshelf speaker (they have I believe a 3 way bookshelf, I listened to the 2 way) for the Karat line, and it sounded good as well, nice range. I listened to this in a store (the GLE and Vento were in a home theater of the dealer), so I didn't get a good chance to do real critical listening. I also listened to an Ergo tower which also sounded pretty good, didn't seem to have imaging that the Vento did, but didn't seem bad for a tower at all and probably better than what I have.
From what I've heard, if I get to a point where I can really upgrade, I will go back and listen to these all again as I did like them. Of course, you're looking at a previous generation speaker so I have no idea what differences there might be from what I listened to. Good luck if you try to find a local dealer. I'm sure there has to be some near you.