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.
'12 M3 6MT Alpine White + Fox Red Extended | '09 328i 6MT Space Gray + Black