Sunday to Thursday, you move quickly although you did say you have been thinking about them for years. I analyzed them for years dithering and rationalizing. It seemed that the PTO "majors"--Baumalite, Land Pride, Shaver, and Woods--all had comparable 25" (or so), PTO powered, hydraulically slewed and raised grinders. While I was pricing them I discovered Quick Attach Attachments, a brother company to Erskine (the promotional videos for each company appear to be edits of the same movie). The differences (and the companies makes them into selling points) were that QA has teeth on both sides of the wheel so it cuts swinging L and R and the QA has brackets for suitcase weights on the frame (weight is your friend).
I have only ground 4 or 5 stumps, so I am still learning to operate my QA. I can easily reach my remotes when standing beside the tire, and that gives a better view of the operation. However, after each series of sweeps the tractor must be backed 6-8" which I do from the seat where the view is not as good. The QA has a scale on the height cylinder that is handy. If the Land Pride doesn't have such a scale, I suggest you rig one. The cutting head bounces when fed too quickly, and for some reason that I think is inherent in the design, bounces more going from L to R than going from R to L (as viewed when operating the grinder). The operator's manual recognizes this and notes: "If the attachment tends to chatter on the return stroke (left to right), suitcase weights can be mounted on the frame for additional stability." Perhaps that is why the other manufacturers have teeth on only one side.
