[Bob the Angry Potato]

Well, KJW is probably the way to go, as you can actually buy it in Canada. It seems that no-one has the HFC M190 around here, there are a few exceptions, though. KJW is more widely used, and have quite a good reputation (except for the odd lemon or pot-metal complaint). However, Arnies and AR's people seem to lean more towards the HFC.
However, I'll admit that the other HFC guns are crap.
As for the reviews, head to the Arnie's Airsoft Review Database, and to to the 3 different ones for the different sorts of HFC M190s. I believe you will be pleasantly surprised.