Yeah, definitely. This is my new favorite episode, hands down. As for what will happen with Trixie, IDK. I'd always pictured Trixie as being an antagonstic rival to Twilight, so now that they're (seemingly) friends, that's out the window. Maybe they could be friendly rivals now, IDK.
Also, anyone else notice that the Alicorn Amulet bears a suspicious resemblance to King Sombra? I'm not getting my hopes up for this (since they've stated they don't like doing this sort of thing), but it'd be really awesome if King Sombra was lurking in the background, manipulating certain events in the slightest ways possible, until he comes back in the Season Finale. Kind of like the Lich in Adventure Time.