If there was one "obviously best" solution for all needs/priorities/users then there would be only one tech camera model sold.
The reason there are a dozen or more major models to pick from is because each one is right for
someone.
For instance, I think the below kit is a killer landscape system to go with your IQ160:
-
Rodenstock 32HR- Schneider 60XL
- Schneider 120ASPH
- RM3Di
- eModule Cloud
- Arca Cube
That system would have the most precise focusing of any tech system you can get, a good amount of shift/rise/fall and tilt-or-swing with
any lens without need for an adapter. It also has the least expensive lenses* (nearly all of the time), native Arca/RSS mounts, modularity with a full sized Arca view camera, a ground glass option, a sliding back option, a rotating back mount option, and a very good viewfinder.
But some might look at that assembled system and say it's too weird looking (the eModule in particular is funky looking) or too big or too steep a learning curve for their taste and might prefer a system that is more immediately intuitive and sexier looking like a Cambo Wide RS AE or might prefer one of the Alpas. None of these viewpoints are wrong.
*All of the systems use the same Schneider and Rodenstock lenses, so the only difference in price is the cost of the mount they put them in.