Stick with it
Just stay with your 'old' grinder and jig and save $500.00
You (if you're anything like me) will go back to the old way soon enough. I've tried several sharpening systems and have found that the big difference (besides set up and being cumbersome) is it does sharpen a tool and make a 'pretty' sharpened edge, but that isn't much like hand or free form sharpening with possibly the exception of 'looking pretty'.
I've been turning for at least 50 years and have always found myself going back to freehand after using one of the systems. I do on occasion use a belt sander for finess.
Merry Christmas, Jimmy