Hi Chris,
Looks like this is an electrocautery unit that you are looking at? Have you used one before?
I have an old, old Birtcher Hyfrecator, which I do not use very much anymore. It does a great job on basal cells, it can do a good job on warts and seborrheic keratoses (but I usually freeze both of those), but I am doing way fewer than years ago. Also does very very well with cherry hemangiomas, and have taken off a few pyogenic granulomas and the cautery, I think, kept them from coming back.
Now I use it mostly after cutting skin tags off, when there is one that just will not stop bleeding. You know, after the aluminum chloride, then 10 minutes of pressure, and it still just oozes and oozes.
I find that I use liquid nitrogen much more. Warts, seborrheic keratoses, actinic keratoses all respond very well to this.
So, to answer your specific question and stop rambling, I do not have experience with Ellman units. Looking at some of their literature, they look way more precise than the old Hyfrecators.
Gene