I find platform sandals and FitFlops really comfortable and my feet can be a bit awkward. Go for it. FitFlops are also indestructible IME and brilliant for flat feet.
I don't like all FitFlop styles but loads of them are lovely, comfortable and fashionable.
Personally I don't care for Birkenstocks or Teva generally. I tried on some of the original Birkenstocks years ago and it was like walking on a cardboard box and they were clearly going to rub me quite viciously.