I'm not sure why, but the manual for Studio One doesn't do it any favors. For example, someone posted in here that the way Studio One handled tempo changes was basic and more or less useless. If it only did what was in the manual, I'd agree. But it does so much more...it's really easy to draw lines, which isn't mentioned, and the timeline compresses or expands to reflect the tempo change, which is brilliant (and also not mentioned). It's easy to duplicate tempo changes, and you can even edit non-contiguous tempo changes easily.
I was also sorely disappointed there was no Exclusive Solo button, nor was one mentioned in the manual. But if you hold Alt on Windows or Option on the Mac while clicking on a Solo button, it becomes an Exclusive Solo.
Furthermore, I was distraught that you couldn't edit Acidized files. But the way SOP handles timestretching means it's not really necessary, and you can still tweak transient markers.
As I've said before, I've continued to use Studio One for its mastering page for album assembly and mastering tweaks in parallel with SONAR. The idea of taking advantage of SOP's Song and Project page integration is pretty exciting to me, and something that no other DAW has. Yes, there's a learning curve...I think there's no way around that.
SOP is deceptively simple looking, but there's more under the hood than it might seem at first. No, I don't think it looks as good as SONAR, but nothing else does IMHO. Things like adding FX to clips is also clunkier, but then again, there are things SOP does that are clunky to do in SONAR.