Holy, no one says anything useful here. If you want info I could somewhat help.
By the way the cant bed is like wedgie to ride. Its the same concept. Its not just for comfort it helps with the aliignment of your body as well and less stress onto your knees.
I'm getting the bosses though, i ride park to and if you are curious to know which brands i was thinking of buying... it was FLUX or ROME. So we are in the same boat bro.
Fluxes are cool though, tooless adjustments are stupid easy when on the mountain and you'll be laughing at your friends when you tweak things out on your bindings while they cant do anything. The plastic just helps with the bending and tweaking your tricks.. which i'm sure you must have known that already. They are comfortable like nothing else. Flux has very low return rate.
Romes: theey are comfortable like nothing else too
so that doesn't make a difference. Although rome has the footbed unlike flux which has the bsae plate showing. I think that makes a difference cause i had no footbed it was uncomfortable. They both are equally flexible so that isn't even a factor.
So yeah i haven't gotten totally into the technical but thats really what you would need to know to distinguish which one you want. I say get romes, they have everythign the flux does and more except for plastic which honestly shouldn't top everyting the rome has to offer. Thats just how i see it.