Scalar-type-hinting - which way is the best to go?

Hi, all Today I read a post around that: http://nikic.github.com/2012/03/06/Scalar-type-hinting-is-harder-than-you-think As some of us are leading to the 3rd and some to the 4th or other ways described in here (I think we can simply exclude the first one ...) Would it be an option (to get this moved forward) to let people vote which way they like most (or which comes closest to their best-solution)? I pretty much like the 3rd way ... the only thing I see that has not been discussed enough is how to handle integers on 64bit and 32bit installations. Bye Simon