If your considering their brush mower then read on, if it's another model then this won't be of much use...
Their brush mower caught my eye, however after some research I'm leaning towards the DR. Reason being, for this particular product, service and parts were not available. The dealer locator option at their web site provided numerous references, none of which were aware of Swisher Brush Mowers - maybe it was a new employee that answered the phone each time? I also checked some other forums, and the common thread is that it's okay for what you pay for. In my application since the brush is thick and hilly, and the Swisher being patterned after the Billy Goat, I thought it too would have a poor balancing issue. The DRs can be found on ebay, for about 50% more in price.
Hope this helps.