RSR has a herbie style drain. So one main, with a silencer, and an emergency. Main drain has a valve that you tune such that the drain is silent.
If you want to setup the tank pretty quick without much tinkering with plumbing and sump design, the RSR is probably the way to go. Compared to my old ELOS setup, everything in the RSR is to my liking. Sump config, bubble traps, etc.
The valve on the drain is kind of tricky, not as fine tuned as a nice gate valve, but it works well enough. Just don't expect to get it dialed in within a few minutes. I turned the valve to a pretty good spot, then adjusted every 15 minutes or so. Since I got it set, I haven't had to touch it since.
Otherwise, I think you'd be pretty happy with it. Oh, the ATO reservoir / setup is kind of a joke though, so just get your own reservoir / ato setup.
You can also look into the peninsula tank. You can run it like any 'ol tank, but the overflow is on the side instead of the back. My preference is for a clear back tank. The non-peninsula tanks have a smoked glass overflow. The backing is vinyl and easily removable, or looks good kept on if you like that look.