Hi guys as I explain in my Introduction to new members forum I've been around wine makers for many years and I basically inherited all the big equipment (basket press, grape crusher, carboys etc.) but not the fine tuning stuff like refractometers, ph testers, high end balances etc. I would like to purchase all these fine instruments so lets start off with the refractometer. What kind do I need? How much am I expected to pay? Are the China made ones on ebay worth a look at?