Always look to the classics for a sensible answer. Shekspeare knew a thing or two, even back then...
"Proedge or no proedge? There is no question"
The tool stays cooler with ceramic over a/oxide or zirconium. 120grit is good enough to do most subtle re-shaping and 60grit is only needed of you're going to do major reshaping too a big scraper or turn a standard gouge into a fingernail profile for instance.
Speak to Ed Oliver. I don't think I'm speaking out of turn when if I say he'll be happy to guide you in terms of requirements and price matching.
