I don't use anything but Blazo-Cut 2000 Universal. I have been using it for close to 15 years with no reaction to it at all.
It's not cheap. I pay about $153.00 including tax per pail and a pail will last me about 8 months, so I guess it's not too expensive. It works out to a little over $19.00 per month. Not too bad, and I run the crap out of my machine. I run it 40 to 70 hours per week, depending on my mood.
Steve
You can buy GOOD PARTS or you can buy CHEAP PARTS, but you can't buy GOOD CHEAP PARTS.