I have a 4x24 Makita that I have had for 15 years and use a lot. I use it for sanding the rails and stiles of doors to get the joints dead flush, edgebanding on panels to get them flush, solid stock to remove minor planer marks, and believe it or not I sand veneers with it to remove veneer tape and flush up edgebanding. Just a matter of LOTS of practice. I wouldn't be without it.
I find it is much more effective for flattening a surface than an orbital sander.
I like the heavy weight. No need to push down so it's easier to keep balanced. Just let it do the work.
Steve Jenkins, McKinney, TX. 469 742-9694
Always use the word "impossible" with extreme caution