Mark VII Wheel and Sill Brush any info are they any good?

[kevinmcf]

I was looking at poodle brushes and came across a Mark VII wheel and sill brush, any experiences with this unit? The major point I like is the wheel instead of the glide bar used like old tire brushes had. these have an issue sometimes with some of the metal tire valves, with sensors (just got another flat Sunday) from broken tire valve. I have an old horizontal with neo on it and uses a wheel I always liked the cleaning of the horizontal brush compared to typical rockers, it has more contact, with the dirtiest section on any car.