Tom B – early Jan can be a challenge, somewhere high and reliable could be like ice station zebra if the weather is bad. Also if I might say planning a romantic week where you’ve just spent nye alone on a lads ski holiday – seems high risk 😯
Next thought is accomodation, hotel might be more intimate but chalet is always hard to beat for value.
Some thoughts;
Meribel – huge range of skiing, high enough to be reliable, decent looking resort with some good apres ski and bars/restaurants
Peisey-Vallandry – more charm than Les Arcs or La Plagne but easy access to both, tree skiing
Champagny – “back skde” of La Plagne very pretty, probably not many Brits – good for La Plagne skiing and maybe Peisey
Sainte-Foy with White Room – did my first ski holiday with Mrs B here, get a slope side chalet, small village, nice atmosphere, easy guided off-piste day to Monal ?, spend a day at say Tignes/Val if you want
Austria – good for apline charm, St Anton or St Christoph (might be a bit small)