There has been a nice discussion on the Stamp Community forum about buying, maintaining, and repairing binders for the Scott International albums.
My two cents:
1) If your collection is actively growing, the binders will be subject to significant stress from use. I suggest going with pre-owned binders and using library book tape to keep them viable. When repairs are impracticable or your aesthetic sensibilities are compromised, replace with another set of used binders. Once your collection is approaching completion, then you can spring for new or pristine used binders.
2) An advantage of used binders is that most of us start our collections by purchasing existing Internationals, so you should have a ready supply of binders, at least initially.
3) Non-jumbo binders will tolerate more abuse, but I prefer to work with as few binders as possible. So I house my collection in used jumbo binders, substituting convenience for beauty. If you aren't adding a lot of your own pages, I'm assuming that a complete Big Blue with interleaving will require two jumbo binders or three regular. I'm unclear as to whether page filler strips would change this.
4) Regardless, I highly recommend slipcases, both to help control dust and to support the heavy albums (pages plus interleaving). And let me slip in a PSA for purchasing the latest pages from Amos which are printed on better and heavier quality paper.