I Used the yfz because of three reasons .

Front hubs interchange between the 250 and yfz spindles both ways. Hence people could keep their wheels Lt Run YFZ or change to Honda pattern .

Upper shock mount and steering stem mounts lined up correctly.

,And finally parts availability is way better.

Also when I do a front end there are features I can build into it not available when you cut off a oem chassis from a yfz. I am able to modify spindle geometry to make the front end turn faster initially and mellow out from jumps. This is somthing I can do with any front end design.

Ltr stuff is great, but not as avaliable and usually brings more of a premium price. Not to mention new Suzuki has had price increases second to none lately.