Our local Belarus dealer had one out on demo about 10 years ago.  UNBElIEVABlE CAPACITY!!!  A little primitive, though.  You would develop VERY strong arms steering this thing over time, but the machine was well-built, and built for very tough conditions.  Even the sides of the grain bin mechanically vibrated to shake damp crop down onto the unloading auger; - indicative of the tough harvesting conditions within the (former) Soviet Union.  This machine also had a 10-bar, 26 inch cylinder, much like a Deere, but the workmanship was a little crude.  Unloading on-the-go was a MUST, since the seperator had to be running in order to power the unloading auger; - if you engaged the seperator without crop throughput, this machine would almost "bounce" you out of the cab from the vibration.  This machine also had the "optional" straw accumulator; - a trap door behind the walkers which would open and close intermittently, leaving "piles" of straw as opposed to a windrow.  No auto header height or flexbar available, but overall, an interesting machine to operate.  (I'll stick with my Deere and Gleaner)