I just bought a RescueMe PLB1 from Amazon. One of the factors in choosing it (yeah besides being 30% smaller, lighter) was the fact that it is a from a British Company which just happens to have a lot of dealers in Canada. Actually both ACR and Ocean Signal have dealers in Calgary so upgrading the battery will be easy when time comes. Provided our Postal service doesn't go on strike, I should get it in a few days so I can register it.
After that I will be on vacation - 11,000 km round trip to the east coast so I will bring it with me. Not very likely that I will need it but it will give me something new to tinker with.
I won't be roughing it much -- car camping and B&Bs.
Size: 77 X 51 X 33mm and 116 gr. or roughly 3"x2"x1.3" and 4.1 oz. which is smaller than a stack of business cards. It comes with a neoprene case to make it buoyant. The small size and weight will make it much likelier to be carried with me at all times. I will play around with it to figure out whether to put it on my belt, put in a cargo pocket, strap it to my daypack shoulder strap, external pocket, pack lid or to my PFD.
PLB1 - Ocean Signal