Replying to STH 12/Griffon/Px 12/SFB'S

Hi there,
So I am newer to skiing, I guess I would call myself a level 1 skiier, but I am progressing quickly. I am 6 foot 180 and I'm trying to find the right binding.
At this point I think it is between the Px 12, Market Griffon and Sth 12. Price is not and issue since I found them all within $110-140 price range.
So when I do get better i am planning on doing %80 all mountian and %20 park. Which bindings would you recommend for this and in general? Which is the most durable? The most functional? Are there any other bindings you would recomend? And so on and so forth.
+k for help!
Thank you!
ON A SIDE NOTE:
I just bought the 2013 Line Sir Francis Bacond for a cheap price. The recommended mount is 2.5 cm back from true center. Where would you recommend I mount for the %80 to %20 ratio I stated earlier. I was thinking 1cm back but some in put would be nice!
Thank you very much! And have a great day!