good thought on keeping it clean.

We ran a 16' on ours.  Much easier to move around than a 20'.  I would suggest a 900 series over a 200.   The 200's are getting old, and need parts that would be difficult to replace/work on.  The 900 would be worth more money I think. 

One problem to watch out for if you purchase it,  the beater drive belt is tooooooooooooo small/light.  It can /will slip causing the cylinder to feed material between the cylinder and the beater.   Difficult to clean out then.  The 6620's had a larger belt there------ an improvement.