I'm not a ton of help on specific models, as I'm not very up-to-date, but I'll throw in word to say there's nothing wrong with the basic idea.
With the balkanization of ski categories - plus the increased public availability of some slightly esoteric products - choosing a ski is a bit of a rococco exercise from the get-go, but essentially there are three categories that sound like they're what you're interested in: (i) a slalom-based "race carver," (ii) a basic slalom race ski, or (iii) a race-stock slalom ski. From your description, it sounds like the order of preference would be as I've listed them above: but don't treat the categories as absolutes. There's a lot of variation among makes and models within a category.
There's a bit of clash between the desire for a fun quick-turns-on-hardpack freeskiing ski and a race ski, but maybe not a horrible amount, at least if you're not super-competitive as a racer. You would go a bit longer (and softer, more balanced in flex between tip and tail) for a freeskiing ski than you would for a race ski. You'd probably do fine with a race carver as both a freeskiing and fun racing ski, so long as you stay pretty short (like 160 or so).
I actually have both a slalom race carver and a slalom race ski (my quiver might fairly be termed a little crowded in that area, for historical reasons), but both are non-current models: Atomic SL9 @ 170 for freeskiing; Atomic SL11 race stock @ 155 cm racing. For pure hardpack skiing, if you just rail turns, they actually don't ski dramatically differently. Their sidecut radius is very similar (it just runs out to a much wider tip on the SL9), and the race-stock ski isn't super-stiff, as it's a women's length, and thus intended for a user who carries a a lot lower weight than me (as well as lot lower points profile).
As a result, for pure hardpack skiing, if you just rail turns, they actually don't ski dramatically differently. Then again, if you start skiing through bumps, choppy snow and the like, the race ski gets pretty unforgiving and tricky. Going the other way, the race carver is a fight to get through a slalom course, thanks to the length (and resultant ungainly-wide tips), though a racer who's capable of laying down arcs at every gate would have an easier time with it than I do. I think they're both fun to ski outside of gates, though the race carver is more versatile.
One at least to look at might be the Fischer RC4 SC, which is their slalom-based race carver. While it's a bit of a leap, I have the RC4 RC (GS-based race carver) and am quite pleased with it.
Edited by sjjohnston - 8/21/09 at 12:29am