I don't think you can go wrong with Dutoit's recordings of Ravel's music on London/Decca. The one that Larry mentioned -- and all the rest! Dutoit's Ravel is collected in this 4-CD box:
Incidentally, I also agree with Larry's Dutoit/OSM Holst "The Planets" recommendation.
Similarly, Martinon's Debussy on EMI/Warner Classics is nonpareil, IMO.
And, like I said earlier, I prefer Munch for Berlioz. (Colin Davis is fabulous too -- and others as well. But Munch is "home base," where I always return.)
Just my perspective, of course! There are MANY, MANY wonderful recordings of these three French giants.