Fantod - I assume you're talking about Anything Goes? I do enjoy that overture as well (especially moments like the rousing orchestral Bon Voyage), but as for the original orchestrations, I've always winced at the modest use of percussion (especially the splash cymbal) and overuse of unison (also a weakness in the original vocal arrangements). It's how popular music was orchestrated back then, and I find hearing the original orchestrations fascinating, but in general, I enjoy the more modern and complex orchestrations that helped to usher in the Golden Age (and beyond). While the older orchestrations of such shows may have used a larger orchestra (which I do prefer), I find later revisions often result in a richer, or even more vibrant, sound.
Honestly, it's a tight race for me but I find the Lincoln Center revival just a bit more fun and satisfying. And I mostly ignore the 1962 version, with the exception of Heaven Hop.
"What can you expect from a bunch of seitan worshippers?" - Reginald Tresilian