Rome 390 for park
Rome Targa for bombing
Ride Delta for park (actually can be for both because it is middle of the road stiff)
Ride Alpha for bombing... SPI if you like it real stiff (that's what she said)
Also consider K2's Auto line of bindings.
I'm curious, which Flows did you have? What year and model? And what did you dislike about them? I have the 2010 NXT-FSE and they are a sick all-around binding. Very light too.