I use the MPX-50. I looked at the MPX-70 at the show, did not exactly like the results, not bad, but not what I produce.
Add to that the fact that it uses wearable impact tips to make the machine cheaper, and the cost of replacement tips per item, (as figured from the salesman's figures), and I did not want it. And then how do you know that the quality has dropped enough that you need a new tip? When you start to notice it, probably you are doing poor work. They should have been going to faceted diamonds rather than away from diamonds.
Philadelphia, PA (Really Bensalem)
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