There are problems with all-in-one units. First off, if the mic is close to the recorder, you'll pick up the machine noise of the recorder. Secondly, most inclusive units are not made with the best parts. Cheaper electronics decrease your sound quality and add noise to the recording. Most folks here wouldn't bother taping with such a unit because the sound quality will be pretty poor. If you're just looking to archive the show, then an all-in-one might work for you. If you're looking for something that sounds anywhere near like the actual performance, you'll want to spend a bit more and go with a multi-piece rig. How much are you looking to spend?