Union Atlas (downside: toe strap problems? ankle strap screw issue? -> knock out; would go for it otherwise)
Union SL (same problems? too pricey so far)
Where are you getting this toe strap problems bullshit from?
No screws come loose unless you forget to tighten it. No toe strap problems if you know how to set up a binding. Seriously, people are becoming retarded over this stuff.