Just in case you bought Studio One Pro during last year's debacle (not sure if you did), there is a standing offer to upgrade to
Notion 6 for $49.95 for Studio One Pro 3 or 4 owners. That will not only do TAB, but also transfer the MIDI/VSTi info into SO directly (which is rather nice). It is also a fairly lightweight, standalone DAW (VSTi host), so it will drive amp sims as well, and has a pretty impressive sound library for being "notation software."
I had asked before I got it what the difference was with Progression (guitar-focused, also from PreSonus) and was told "Notion will do everything Progression does, and more."