I bought the Radio Shack digital decible meter, but found it to be inaccurate and very technical to use. If you need to be performing, you don't want to have to press three buttons and turn a wheel to get your meter readings.

I then bought this one from Guitar Center. Although it is also a big technical, at least I can get the reading with one hand in two seconds. It is also much more accurate.

Radio Shack ($49): http://www.radioshack.com/product/index.jsp?productId=2103667

Guitar Center ($69): http://www.guitarcenter.com/shop/product...l_sku=102671419

All the best,
Chony