In reply to Simon4:
Lots to do round the head of the Maurienne valley, Petite Ciamarella, Albaron, Charbonnel, Grande Ciamarella, Francesetti, Mean Martin, Sana, Grande Aiguille Rousse all around the 3300 to 3600 bracket.
Huts are good, generally not too crowded, good choice of routes (steeper or not so steep) - possibility to do several tours from one hut (or the valley) or do a hut to hut tour...
Same further down the vally (eg Thabor/Cerces area)