Not really, Silverstone is better than any of those companies hands down. The only company that makes a better product than Silverstone is PC Power & Cooling, but the price is outrageous.
But, if you want to waste your money on a lesser product, go ahead.
You may also want to consider this CPU:
All the prices at that store are outrageous. Not sure about Canadian stores, but check out Tigerdirect:
Not sure about the Antec 900, if you like the looks fine, but don't buy it for the cooling. There are much better cases out there for that (*cough* not steel cases...)