I would say the difference is really big, try to find out what format is better for your work.
The 6x17 and 6x12 camera systems from Linhof, Fuji and others are not really flexible, but expensive.
There exist a universal back- made in China- for 6x12, 6x14 and 6x17 cm. it can be mounted at all 4x5 inch kameras, and you get also a full 6x17 focusing screen. I paid for it about 400 euro some years ago, so it is a very cheap, you can use all 4x5 inch cameras like compact Technika, technikardan, Wista or arca swiss. You can use all movements of you camera- the panarama cameras has only shift.
Also the lenses are cheap as second haend, so you get an extremly wide, normal wide, normal and tele, so 4 lenses at prices that you can get only one lens for the panorama cameras. You can use Linhof finder in the older version, that is cheap and very good, so you are flexible and it is cheap.
When you have the experience with that formats and you are sure what you need and what not, you can still go for the right panorama camera and right lens without making mistakes.