Hi all, I live in Canada so I'd like to start off by saying I may not have all the options you guys do in terms of selection. I am considering upgrading my rear speakers to the kind that mount directly on wall. My new setup may not allow for my current bookshelf speakers. I'd rather not spend tonnes of money, but I want good quality speakers that are not too large. I'd prefer to buy them from a big box store so I could find them easily and more likely to have them in stock. Any and all advice welcome. Thanks.