I agree that Philarmagic is the best 3D show at the world but Honey I Shrunk the Audience is also great. I used to love the pre-show with the "True Colors" theme tune. Its a special song for my Dad and I and I used to tear up whenever I watched the show. Aahh memories!
Philharmagic is good, no question, but it is relatively new, and I think that puts an extra shine on it. I don't see it having the long-term appeal that MuppetVision 3D has had. It is just so comprehensively entertaining.
Mickey's Philharmagic is the best. Its Tough to be a Bug is also awesome, but could be scary for little kids. Honey I Shrunk the Audience is a classic. I wish they hadnt changed the preshow. And I was never really a fan of Muppet Vision 3D, but you have to see it at least once.
Mickey's Philharmagic is my favorite by far. The 3-d effects are the sharpest of all of the shows, and it is just so cute. I actually like all of the 3-d shows very much, though I think ITTBAB is a little to intense for really young kids. Muppets is a classic. I love the old guys up in the balcony.
If you are in the Busch Gardens Williamsburg area, they have a 3D ride called The Curse of DarCastle. Not for little kids at all. It is very cool too. You are actually on a ride while this is all going on. It is still a second to Philharmagic though.
Mickey's Philharmagic. I prefer the cartoon 3-Ds to the movie 3-Ds. I think Honey I shrunk the Audience and Muppet Vision need to be refurb. The reels are very worn. At USO Shrek is great, quite different than the ones at Disney but I won't give it away.