I'm about to order and construct a large quantity of frames. In the past I have always user wedged tops and grooved bottoms in combination with crimped wire foundation with the hooks at the top. I'm not looking forward to the tedious task of nailing all the wedges back on and have also found that the top hooks sometimes cause the foundation to warp. Therefore, I have been considering using a grooved tops/crimped wire, no hooks combination instead. Are there any opinions or, better yet, hands-on experience regarding the different frame/foundation options, including options not mentioned above? I've never been fond of plastic core or plastic core/metal reinforced foundation with the cute little communication holes at the bottom corners, as they always seemed somewhat hokey to me. But there may be others out there with different opinions or experience. So, what would be considered the ideal frame/foundation combination and what is it about that combination that makes it ideal?