My primary 4x5 system for several decades was Sinar. They have by far the largest system of components, and the sheer abundance of that makes used Sinar gear quite affordable at the present. Their F2 model is excellent in the field, and yes, I have backpacked many thousands of miles with this system, generally in very rugged terrain.
But I also have a little Ebony 4x5 folder which is getting more and more desirable as I continue to age well into my 70's. It's slower to use than the Sinar monorails, and a little less versatile, but is more portable - allegedly the best crafted wooden camera line ever, but now getting very expensive even used, since they're no longer being made.
My older brother once sold Linhof gear, so shot a 4x5 Technika. But I'm glad I bought Sinar instead - way more versatile, faster to operate, way easier to properly balance atop a tripod, far easier to find parts for, or to repair yourself if necessary. The rail can be extended as far as you wish, or be contracted for wide angle work. Numerous bellows options. Components can be interchanged going clear back to the original Sinar Norma line (which is now the model I primarily use).
Having a longer rail means that if you like long focal lengths, you can choose from regular lenses, whereas, after a certain point with a Technika, you have to resort to bulkier heavier telephoto lenses; and the cumulative carry weight, including a suitable tripod, might come out distinctly more than that of a field Sinar.
MF options and 8X10 are really different topics in their own right. I shoot those too.