The best advice I can give you, "find a dealer you can demo with and work with them"
You are referring to a Linholf (large format) and tech camera (pancake, Alpa, Arca and Cambo). Really not too much the same between these. There are a lot of photographers on this site using large format cameras and tons more using tech cameras. Each person can give you the reasons they prefer what they purchased. However the real key is what works for your shooting style and budget. Are you going to buy new, or try and buy used. The reason I refer to a dealer is that most of the tech camera companies, really all of them, rely on a dealer interfacing with the company, not the photographer. So if anything goes wrong or you have technical questions, you may find it hard to reach out to Alpa, Arca or Cambo. And now you have the Arca Universalis and Cambo Aptus to consider.
I believe the camera you have is the 50MP CCD chip (Kodak) so you can take full advantage of movements with this back. If it's the 50c, CMOS, then as previous mentioned, you will have limitations on movements and lens options.
I use the rm3di, Arca, it works for what I am looking for in a tech solution. But that is just one of many hundreds of solutions.
But the best way to determine which solution will work for you, is to work with a dealer that can show you the various brands, so you can determine for yourself which one you feel is the best.
www.captureintegration.com great place to start. They ship world wide and carry all three brands you are considering.
If you have any questions on the Arca rm3di platform, feel free to email me off line.
paul@photosofarkansas.com Paul C
