Tenzo = crap. Friend had a set on his Mazda 3 and three of them cracked in one season and he's a very cautious driver.
I've had multiple sets of VMRs on my E36 and E46 and for the price, they are fantastic quality wheels. VMR is actually a very high volume, reputable wheel maker in the aftermarket BMW/Audi/VW/Benz scene. These wheels are highly spoken of. Ofcourse, being cast they are heavy but they withstand some of the nastiest roads I've driven on. I have no complaints about their quality. Best part is that they are so inexpensive that even if you damage a wheel, a replacement won't cost you an arm and a leg. Your best local source for VMR wheels would be Allen @ Simply Tire (416 916 9233). You simply CANNOT beat his prices even if you were to buy from the US, and his customer service is second to none.
'02 ///M5 Imola Red / Imola Red '09 335i Alpine White / Coral Red