I have about a half dozen Auriou rasps and rifflers. Fantastic tools. I've never even held a Liogier, but from what I've heard, they are on par with the Aurious. You may also consider trying to find some made in the US Nicholsons. A coarse rasp, a cabinet rasp and a cabinet file, and you'd be set for handles. 8 or 10 inch would work. I've seen them on that auction site recently. You could get all 3 for $50 or less. Vintage Nicholsons will be better, because they were hand stitched, not machine. Same price on the vintage, but harder to find in decent shape.
That said, I've got a vintage Nicholson 55 that leaves a better finish than my 9 grain Auriou.
I do more than handles so I have files, scrapers and the 49/50 Nicholsons before they went south. Do you know how the 49/50 nicholsons compare to the Auriou's?
I don't think I have ever seen the no 55. Short and fine I take it.