gah hit this thread too late.
The double front is horrible in my experience... like horrible. It works as a pushup bra, no matter how I position things.. it acts as a bra and not a flattener. And it accentuates curves (makes them more visible then they naturally are - so they stand out more under clothing), and the front is cut so low - and that shows through.. making it look like a bra. I HATE this binder. was a huge waste of money IMO.
TRI Top flattens eveything out well, does not acentuate curves, isn't low but, the only issue is that it only goes half way down, but throw a wife beater on over top of it and I'm good to go.
I know everyone experiences binders differently. But I'd be better off wearing a bra then the double front most days.