I went around the mental "shall I buy a 85 or 106" loop a million times. However, I already have a RC8 telescope to give me a smaller (or zoomed in) image scale for smaller objects like M81, M87 etc and the Abell galaxy clusters. I felt the FSQ-85 gave me better options for wide-field imaging of large targets like M31, M33, North American Nebula, Rossette Nebula etc.
My FSQ-85 rig consists of a Skywatcher ST80 guide-scope with a QHY5 guide-camera. The whole shebang is mounted by ADM dovetails/bars/saddle onto a Skywatcher NEQ6 mount and I control it all via ASCOM/EQmod from my Dell D630 latitude laptop.
Here is a picture I did of M33 with 75 minutes of Luminance, binned at 1x1 and 20 mins each of RGB binned at 2x2. All this done on an Atik 460 at -21C. The seeing was terrible, the moon was rising and I was dodging clouds! To say the UK climate is challenging for Astro-Photography with our milky white skies and constant cloud is the understatement of the century!
All in all I am impressed. I intend to do some videos of how I mounted this scope so watch out for those. I also will do some articles on how the camera connects to the scope in both reduced and native guises with the different Takahashi adapters.