My thoughts on Europe. For reference, the only resort I've been to in NA is Big White in BC. There was so much white stuff in Big White that I felt like I was in Miami in the 80s. It was, by far, the best conditions I've ever boarded in. You can get the same amount of powder in Europe, but not to the same frequency (you have to time your trips just right).
Zermatt, Switzerland: One of the best resorts in Europe by far. It's massive! The snow is always, always good. I was boarding there in the middle of April this season and the snow was still amazing high-up. It's also linked with Cervinia, Italy, so you can board in two countries in the same day. Nightlife is great - HunnuStahl is rocking (Jager, live band, lots of beer) and the party moves down to the Papperla Pub in the evening (more Jager, more beer, live band, DJ in the basement club). I'm going back next season.
Val d'Isere, France: Also one of the best resorts in Europe, and the Espace Killy area is massive. The variety of pistes is vast, with everything from mogul runs, to glades, to the Face (the World Cup run from a few years back. The snow is usually fantastic, but I caught a week in March last season where it was a bit sketchy in places.
Ischgl and St Anton, Austria: Head here if you want great snow and the best apres in the whole of the alps. Ischgl in particular is mental, and you can board into Samnaun, Switzerland (which is duty free!) and stock up on alcohol and cigarettes for cheap). St Anton is a bit more upmarket (less strip clubs
) but equally as amazing for partying.
In short: Europe has a lot to offer!