I haven't found anything better than NCIX, but I will check out Blistex's links.
Edit: From a quick look-through, it looks like NCIX still has a better selection, and
www.canadacomputers.com prices seem more comparable to NCIX than
www.pccanada.com
But sign up for NCIX's weekly newsletter/sale flyer and you can get more sale prices on selected items that make it even more favourable to your wallet.