This was the cheapest one I could find, and it is a bit disappointing. It does not turn very well around the circle. I have attempted to loosen it up by adding lubricant, but it hasn't helped a lot. Maybe some. I think I will avoid this puzzle maker in the future.
On the plus side, as I was playing with it, not only was I able to remember how to solve it without looking at my notes from the past, but I also came up with a new and better way to solve the two edges that are adjacent to the corner.
Drat. I should have written it down immediately. Now I can't get it.
(Later) OK, I've come up with something but I don't think it is what I came up with this afternoon. But here it is. After getting the circles filled correctly locate the corner—on this puzzle it is the red, white, blue corner. With the white circle on bottom, use either setup moves or EPS to place the blue-white (or red-white) edge on top and across from where it needs to go. Spin the corner to the top so that the blue-white (or red-white) is directly across from its spot beside the corner. Do (M2 U2) x 2 to move it across. Move the corner and edge that are now paired up back around to the bottom.
I think this is easier than the former method I used, but probably not a whole lot. I think it is somewhat similar to what I came up with earlier today. It seemed so intuitive this afternoon.
August 20, 2014
After a number of scrambles and solves, the turning quality has improved enough that I am not quite so disappointed anymore.