Saddle's a Forte something (sorry, I'm on campus and I dunno what flavor) but it's fairly nice and fits my sit-bones very nicely, so I'm loathe to start fiddling expensively with new saddles. Is sliding forward a real problem with angled saddles?

I'd just go out and try all the positions except that I like to go for a few long rides before switching, just to give each of them a fair chance. Also, I don't want anything that would be nice for quick jaunts around the neighborhood but wind up unexpectedly painful after a 60+ weekend club ride.

Thanks!