I wear mostly ECCO sandals, as they are so far the only sandal I've found with the arch support I want.  Can't say I truly love them, however, as the arch is always too far forward (towards the toes) for me, and I have to keep tightening the sandals until I get them broken in a bit.  However until/if I find a sandal with good support and a good arch I'll remain with ECCO.