Hi, My band wants to buy a powered mixer and two speakers to amplify the vocals (1 singer, 1 backing). What do we need?? 2*100watt enough or do we need more?? Any good brands??? We don't want to spend a lot of money, but we want something thats loud enough. We play with 1 guitarplayer (100 watt (tube) halfstack) and one bassplayer (350watt fullstack (410+115) and one drummer. Thanks!