All Systems have Different lensboards, some use linhof technika standarts, some sinar.
The important question is what lenses You need to use.
If you use wide angle Till 75 mm all Technika-like or wood camera will be ok.
But if you want to use extrem wide with movements you will need modern camera like sinar f. This is a very cheap camera and all sinar stuff be used with.
All sinar cameras can also be converted to bigger size like 5x7 or 8x10.
If you can spend more than Arca swiss f-line or linhof technikardan would be the first class for architecture.