I'd say you'd be best heading for Chatel, to the lifts at Pre La Joux, from there your straight into the heart of the Portes Du Soleil.
Best to make the effort to get there early during New Year week, and a top tip would be to buy your lift tickets in Chatel at the 'Maison Chatellane' main ticket office by the mini roundabout. Should avoid any queues at the lifts.
Fingers crossed for better snow than last year