After many, many years of use, our trusty (but very heavy) Yamaha stage monitors are dying off. I am looking for input on lightweight, yet reliable stage monitors. We play a lot so they need to be able to take loading in and out several times a week. power wise we use amps in the 400-500 watts a side at 8ohms range. I have the opportunity to pick up 2 or 3 Peavey SP12m monitors at a reasonable price. Not familiar with them though. Not looking to go crazy on price, but not looking to use Behringers either. Peavey, Yorkville, Yamaha, Carvin, etc..