I spent three days in Verbier in January, and it was fantastic. The slopes are varied and well-maintained, with great snow and sunshine almost all day. For freeriders, there's plenty to keep you busy with incredible routes. The snowpark is also great, perfect for a change of pace.
Even though it was quite busy, the facilities are modern, so there weren't long waits at the lifts. Honestly, a really great resort, whether you're on the slopes or off-piste.
Remember to arrive early to get a good parking spot near the lifts. Bonus: parking at Le Châble is free.