I own both the older W&H style and the newer one you are talking about. The newer one is much better. Both have variable speed which the old W&H didn't have. This is important because for the most part you cannot make multiple passes. I know there Is some kind of drive roller that is supposed to allow multiple passses but I don't have it.
Had some problems with the drive gears on the first one. The newer one has run only hundreds of feet of base, casing and crown. Great machine that pays for itself on the first job. New one is much better.