We used a small Yamaha for three and a half years, now it's starting to crap out. We are looking for a durable, PA that sounds good in the $500-800 range. We use it mostly for vocals, a little drum support too. We play mostly small venues but occasionally the larger gigs too. I'm thinking Yamaha again, because we put our current one through hell and it still works okay. What do you use? What do you reccommend?