Am I the only person who prefers WDW's Space to DL's Space?
I think WDW's Space Mountain has better "bones" - more interesting queue layout and track layout, the structure of the Mountain is more impressive than Disneyland's smaller version (which had to add a weird third ring on top, which totally ruins the look of the Mountain, IMO), and the queue music is really evocative of a by-gone time at Walt Disney World. There's something about it that it timeless and ethereal, and really changes my brain state. Gets me ready for a big, exciting cosmic adventure.
Disneyland's Space Mountain, though, has been given surface treatments that make for a more exciting ride. The on-board music, the effects, the architecture of the queue, and then that slick-as-anything smooooth track. It warms my heart, whereas WDW's rattles my brain.
If WDW rebuilt its layout with a new, smooth track, added on-board music, updated all the special effects, cleaned up the queue and repainted the mountain, it would make a world of difference. WDW's "bones" with Disneyland's show quality standards would probably make it the best in the world.
Disneyland Paris' is so different I almost hate to compare it to any of the others. It's closer to Rock N' Roller Coaster than anything else stateside. That said, it is amazing inside and out. That facade . . . that re-entry tunnel . . .
. . . but there's very little there can could be shared with any of the other Space Mountains. It's singing its own tune in almost every possible way.