I need some shoe advice. I live in Birkenstocks over the summer, especially so since I tore a tendon in my foot trying to keep fit (that'll teach me). I now need some equivalent for winter to wear at work. I need something that has a similar level of support, but doesn't make me look like an old lady. I wear a lot of wide leg trousers. I'm also a skinflint on a budget, so something for similar price would be good too. 
Any suggestions?