Greetings & Salutations --AGAIN. My surround speakers aren't huge or really heavy, but after seeing all the resin speaker mounts out there, & all the folks saying how they bend a bit under the weight of some of the larger (but within limits) surround speakers, and the high price of nice sturdy hardware, I'm tempted to mount my 8 lb. ones & esp. my 12 lb. main fronts using the key-hole mounts. Yea/nea? -What are the drawbacks/pluses?? Thanks again.