I have been riding boots full time since January
I went with the Ronix Ones and was very happy with them. Top of the line boot and integrated seamlessly with my 136cm North Gambler.
I recently purchased the North Ronix Frank Edition and I am equally happy.
The major difference between the two is aesthetic and design. The one is a little more luxury, padding and has some sweet detailing especially the 2012 model.
The North Ronix 2012 Franks came ready to fit onto the track system and is a very tight package all up.
So far the Franks are very comfy, well built and go well.
You will see a lot of the pro riders opting for Ronix which may give you some hints.
I think which ever you choose you will be more than satisfied.
Now that I have both the ones and franks I have some options.
Enjoy
Here is a short video I made which shows my migration from straps to boots.