I found this refractometer on ebay. It seems to be a decent one, plus it has a five year warranty. I particularly like the warranty on it. Here is the link http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7707950692&rd=1&sspagename=STRK:MEWA:IT&rd=1 does anyone know if this is a reliable brand? Or should i get the standard $50 dollar one that you find everywhere? Thanks.