The reason I use CoasterForce instead of other theme park/rollercoaster forums is because CoasterForce isn't inhabited by sheep who are scared to give their own opinions, if you have a problem with that fact then use a different forum.
Personally I feel that Epcot has the best in-park music out of all the theme parks I've been to, Tussaud's/Merlin's music has always been very in-your-face. It's good, but you notice it far too much. Likewise with studios-themed parks. Epcot, however, uses (mostly) very subtle, consistent and well thought out music throughout future world, whilst the use of live music around World Showcase is absolute genius.