Definitely get the all-in-one version, you won't regret it. It's heavy, but all you have to do is take the lids off, plug in the speaker cable to your cab, and you're set up. Pimp. I just got 2 made by Georgia Case Company, then wired it all up with George Ls. When you do it that way, you can bind all the cables together, attach them to the sides of the rack, put a light in there, etc and end up with a really neat & clean install. our last tour we had our heads without any case, and we had small 4-space racks, and setup was always a pain. We're a support act and don't have a lot of time to set up or load out. And the heads had some near-misses in the trailer as well....
It'll end up being about 2/3 the size of a 4x12 cab, and a few inches thicker because of the 2 lids (you want both lids or else you won't be able to get access to the back to wire it up or troubleshoot if something comes loose at a show).
