In terms of music, I'd say Epcot and DHS. They sound so majestic while still sounding contemporary. You get a mix of both at each park.
Here is a breakdown of pretty much all the music you hear in each park and its moods.
Spaceship Earth - majestic/orchestral (current)
majestic/orchestral/synthetic (1994)
majestic/orchestral/synthetic (1986)
Future World Area Music - synthetic/contemporary/slightly orchestral/majestic
Universe of Energy - majestic/orchestral/light-hearted (current)
majestic/orchestral/synthetic (original)
Test Track - contemporary/synthetic/techno style
World of Motion - light-hearted/orchestral/majestic
Mission: Space - majestic/orchestral
Horizons - majestic/orchestral/light-hearted/synthetic
Wonders of Life (now defunct) -
Area Music - contemporary/ethereal/synthetic/slightly orchestral
Cranium Command - orchestral/light-hearted
The Making of Me - orchestral/light-hearted
HISTA! - orchestral/light-hearted
Captain EO - orchestral/majestic/heroic
Magic Journeys - orchestral/smooth/synthetic
Journey Into Imagination (current) - orchestral/light-hearted (main attraction music)
contemporary/weird/synthetic (outside area music)
(1999) - contemporary/weird/synthetic (all music)
(original) - contemporary/light-hearted/orchestral/synthetic (all music)
The Living Seas - contemporary/synthetic
The Seas with Nemo and Friends - contemporary/orchestral (Nemo overlays)
Living With the Land - synthetic/contemporary
Soarin' - orchestral/majestic
Food Rocks - rockin'
Kitchen Kabaret - light-hearted, humorous
World Showcase - depends on the region where it comes from, uses mostly acoustic instruments
IllumiNations - heroic/majestic/orchestral
DHS
Area music - depends on movie or TV show being used, mostly orchestral, majestic, and grand, some synthetic, funky, and contemporary
The Great Movie Ride - mostly orchestral/majestic/grand/light-hearted
Star Tours - mostly orchestral/majestic/heroic
American Idol Experience - contemporary/synthetic/rockin'
Doug Live - contemporary/light-hearted/orchestral/rockin'
Superstar Television - contemporary/smooth/jazzy (I think - does anyone remember this?)
Sounds Dangerous - (outside area music) contemporary/funky
Sci-Fi Dine-In - uses stock music from old trailers, all orchestral
ABC Commissary Lane - uses theme music from TV shows from 1950s-present, depends on music being played if it's synthetic or orchestral or chamber-sized
Muppet*Vision 3D - (main show orchestration) dance-band size orchestra, light-hearted
(pre-show orchestration) synth mockup of orchestra
Toy Story Mania - heroic/orchestral
Voyage of the Little Mermaid - orchestral/uses orchestrations mostly from film
One Man's Dream - orchestral/grand
Lights Motors Action - contemporary/synthetic/electronic/breakbeat style/rockin'/modern
Rock 'N Roller Coaster - contemporary/rockin'/uses Aerosmith songs
Twilight Zone Tower of Terror -
(pre-show score) dissonant/orchestral/weird
(queue score) old 1930s jazz recordings with added eerie reverb effect
(main show score) dissonant/partly orchestral/mostly synthetic/weird/scary
Beauty and the Beast - orchestral, orchestrations modeled after those from film
Fantasmic! -
(main show score) orchestral, grand, heroic, exciting
(pre-show score) contemporary covers of Disney tunes ranging from techno to big-band to country and beyond, and a couple of added surprises
(all from albums previously available on Walt Disney Records)