Same questions as Donny. You really DO need those extensions, and from my experience they make a huge difference in projecting those mid range sounds and separating the overall system sounds. Glad to see you sang as well. You need to do it more, though.
Gary
I disagree - the extensions are great most times, but there are lots of times when I just need a little push, and one is plenty. You have to use your ears at each venue and not read the manual all the time. In most situations, the extra coverage is great, but I am currently using the Compact in its shorter stature to better fill the room I'm in. This set up in this room ... just works.
I'm also a fan of standing while performing - better stage presence and easier for me to sing.