I have ridden them and sold them as well, as an economy alternative for the kids bikes and novice riders.
To me the front seems much like the Dunlop, does not have the sidewall flex of the Mich. Sharp precision feel.
The rear seems to work, yet grip on wet rock not as good as the Dunlop or Mich. for some reason.
Long story seems the same as most in that one gets what one pays for, all up to personal choice and usage really.