What do you know about Muller TC18 compactors

I've seen some Muller TC 18 compactors for sale recently. What do you know about them. I believe they are built in Brazil but I'd like to know more about them. Are they a durable and economical machine? Are they still being built? Here are some links for some pics. http://www.ironplanet.com/jsp/s/item/161940?h=405,1682 http://www.farmphoto.com/thread.aspx?mid=49283 http://www.equipfind.com/heavyequipment/2002MULLERTC18Compactor.htm