+1 for the Bose, if you can find one to rent, it would be the easiest for you to operate, matter of fact they are virtually plug 'n play systems that automatically provide for the critical monitoring issue and do not suffer from the problems of feedback.

Sound great, easy to use, light in weight.

One, with a mixer for input so you can do a few mics and lines, will easily handle a 50 - 100 person venue.


--Mac