Hi, I converted from Hassleblad to Rollei SL66E about 14 yers ago. I find the SL66E to be much easier to use for close-up photography with its' built in bellows and tilt capabilities. In addition I have the Rollei 66/35 adapter which enables me to use the SL66 Lenses on my Rollei 35mm SLR's (in manual only). Never tried the 6000 cameras because I had a friend with an SLX who had quite a few problems with it (that presumably were corrected with the 6000 series cameras). Capt Jack