Suggest making sure you try any microwave you buy within the first few days of buying it to make sure it still works; don't wait 2-3 weeks and try and return it.
That said, I'd suggest this one; its a wicked deal for a great looking SAMSUNG stainless OTR microwave. Plus Costco's return policy is bulletproof. Its
$259 in stores (I snagged one at Calgary South location the other day, they had tonnes in stock). 300CFM blower, 1000W to boot.
http://www.costco.ca/Browse/Product.aspx?Prodid=10334404&whse=BCCA&Ne=4000000& eCat=BCCA|103&N=4009257&Mo=37&No=20&Nr=P_CatalogNa me:BCCA&cat=323&Ns=P_Price|1||P_SignDesc1&lang=en-CA&Sp=C&topnav=