Both the Arax 60 and the Pentacon Six are terrific cameras if you have the need to shoot a 6x6 SLR but cannot afford a Hassie. It is real hard to beat the price of a brand new Arax 60 kit, even if you are thinking of buying used.
The best part of these cameras are the lenses, and they really are not that terribly expensive either.
I still use my Pentacon Six TL fairly regular but if I were buying something today I would go for the Arax 60. Pentacon Sixes can have frame spacing problems and it can be hard to find a used one that doesn't need some repair. I had mine overhauled a few years back and now I have so much invested in it that I could never sell it for what it cost me. Therefore...I use It and get my money back that way. But the Arax 60 is brand new with a nice little warranty to go with it.