Teva flip flops are the most comfortable of all.  I was vacationing with my sister-in-law, who slipped my Tevas on in the hotel room.  She was astounded at how good they felt.  So when we got home, I ordered a pair for her, and a new pair for me.

I just wish they would bring back the variety of styles that they have let go in the last few years.  I have had some REALLY cute pairs!