I love the Porte du Soleil and have been there about eight times since 2005. Would deffo recommend but it kinda depends what type of riding you prefer.
I'm sure people will disagree but IMO the PDS is mainly downhill trails with tabletops and doubles galore. There is some hidden singletrack but this is either super steep or super sketchy and you need to hunt it out.
The main advantage for me is it's a 12 hour drive which is very doable. Morzine is a great town to stay in with plenty of chalets to rent and shops and restaurants for the evening, lift access easy to get everywhere around the PDS including Les Gets, Chatel, Mossettes, Les Lindarets etc. and it's easy to self-guide.
Some of these other places are arse end of nowhere with one restaurant that you have to go to every night.
If you prefer singletrack descents then I would look elsewhere like say Les Arcs (great riding but not much nightlife and only really one mountain) or Albertville/Areches-Beaufort which is great but not much of a developed lift system and you need guiding.