Thanks all for your comments! I have been swamped with work today, but I really appreciate the help.
@TN: I certainly will look at both the online Illingworth survey and Yearbook 108, might even buy the yearbook just for this. How many pages does that particular survey span?
I'm aware of both the Accelerated Dragon and the Kan as options. In fact the AD is my second choice for this purpose at the moment; it is more theoretical, but on the plus side I already have some experience with it. And 2...g6 as an anti-Rossolimo move order is definitely a plus.
On the other hand, I don't feel the Kan fits the bill. 10 or 5 years ago you could play the Kan and expect White to be rather clueless, but today there is lots of sharp theory, and White players are better prepared, no doubt thanks to the repertoire books by Khalifman, the QC team and De la Villa, not to mention ChessPublishing! So I think of the Kan more as an unbalancing winning attempt (and may play it for that purpose if I expect my opponent not to be up-to-date on the theory). My main aim in this thread, on the other hand, is to find something really solid to throw at attacking maniacs
Defending against these aggressive types has been a clear weakness in my play lately. So maybe it's precisely a "Petroff of the Sicilian" that's needed! I don't think I could bring myself to play the actual Petroff, I have a distaste for any sort of symmetry in chess openings...
Btw. the so-called "Grivas Sicilian" is a third solid option I've considered, and I acquired Grivas' book on it a couple of weeks ago, but I expect it requires deep, thematic understanding of Scheveningen-type positions to play it successfully. So despite being low on theory, it may not really be a quick fix either.
@ErictheRed: I know absolutely nothing about this ...h6 line; would you say it's as sound as the Löwenthal? I have a vague recollection of seeing a survey of a Sicilian with ...h6 in one of the S.O.S. books, but that may have been ...h6 even earlier.