highly recommend Soldeu - El Tarter, Andorra connecting with 186km of runs... ski pass covers all of Grandvalira.
http://www.snow-forecast.com/resorts/GrandvaliraElTarter/pistemap_full
I would recommend soldeu/grandvalira as well. Went there last march and it was a great weeks skiing. They've had a decent amount so far from the webcams.
Went with someone who has only skiied the alps and top European resorts and he was very impressed. Loads of skiing and well looked after pistes and lift system.
Wasn't too expensive either, looking forward to going again next year hopefully.