the head mojo 18's are also quite good and tend to run a little cheaper than their 18 din rated counterparts

start checking ski swaps and yard sales for anything with a turntable heel peice. look for rossignol fks or fkj. also check for look p12 or p15. not to be confused with px bindings. px are shit and you can see for yourself why none of the freestyle skiers use px but rather 3 year old p12s. turntables are light durable and wil not prerelease you. if your binders heels dont swivel then you gonna prerelease. thats all there is to it.

Check out the Rossignol Axial 2 Freeride 200 XXL, Rossignol Axial 2 Freeride 150 Wide bindings or the equivalent Look and Dynastar bindings.

Well, it depends on how the binding is mounted and how much you weight. If by bomber you mean they won't break then something titanium, like the Look PX 18 Ti is definitely bomber. If by bomber you mean won't rip out of the ski, then there is no bindings that would not rip out if it isn't mounted properly. Get it mounted properly, and get something that has a huge DIN setting range.