Teva's for me too!
Fire14, if you have a Galyan's in your area, they stock Teva's. I bought mine from Teva online. I think justforfeet also carries them for a better price as well.
I think the lack of arch support is from the Tevas that are like the old fashioned flip flops (the ones with tire like bottoms).
The ones I have give lots of arch support. I wear a 7 ladies, and I bought a 5 1/2 kids size. If I remember right (it was about a year ago) they ran about $40 with shipping. The kids sandals were much cheaper, so if you have small enough feet, that's where I'd start.