Thought this was pretty fucking rad. Saw it in this Reddit thread.
"So these are my ski tracks for 103 days of skiing in the 3 Valleys in France during the last season. No brag, I just thought the colours and patterns were pretty, I'm easily entertained :).
So in 3 Valleys there are 340+ slopes, varying from 3200m to 1100m, so for one thing you never get bored :) I've done 2 seasons there now and there are still 4 or 5 slopes I haven't done. I was at one end (Courchevel), and to ski across to the far end and back will take you most of the day.
Conditions-wise, last season wasn't great, most of December we were skiing artificial snow below ~2300m, but 3V has something ridiculous like 3000 cannons, so that still meant hundreds of slopes available. Jan and Feb are when the big dumps arrive. Not quite Westcoast US amounts from what I can tell, but dumps nontheless. With it being a popular area though, it tracks out pretty fast unless you know the quieter spots that only come with local knowledge.
March and April are my favourites - still regular snowfall but temperatures of 25-30 celsius for weeks at a time, which is beautiful. Tees and shorts weather for the last 2 months really.
If you're a US skier, you'd also enjoy the usual stuff of 'there are no bounds' - you can ski off-piste anywhere, just like a real adult :) Skiing verticals of 1500m+ is a regular thing too; from the summit of Saulire down to my home in the bottom village took about 20-25 minutes flat out.
The lifts are all top notch too, I didn't queue longer than 5 minutes the whole season, and there are no slow chairs or drags to be found. This means you're mostly doing 5-10 minutes on a lift followed by 15-20 minutes of descent. The views anywhere in the Alps are absolutely stunning too of course.
tl;dr: big verticals, long season, huge choice of trails, super-modern lift network. If you ever visit, let me know and I'll show you some of my fave spots :)"