I have had my grinder from Rob Frink for close to 2 minths and love it!I had a griz and it seemed to limit the work that I could do comfortable.
I highly recommend his grinder and the man that sales it,both are great to deal with.I have mainly run a serrated wheel on mine since I have had it and if it runs any smoother with a smooth wheel (and it will)it will be totally awesome.
I believe someone said it was built like shythouse,that would be a brick shythouse.