Saddle recommendations for flat-backed young TB under $2k?

I have a coming 5 year old TB mare with a flat, narrow-ish back, decent wither, and uneven but not huge shoulders; she needs a saddle with a pretty flat/straight tree. I am working with a fitter/BC rep and she fitted the horse into a Dante Vinici–however, that saddle does not exist new or used in my price range, so looking for other options. County and Albion have been suggested as possibilities also. My original intent was to stick with the wool-flocked, English bench-made type saddles, but I am open to looking outside of that as I am not finding much to try right now! As the horse is young and changing shape (already outgrew the first jump saddle I had for her) I do not want to spend more than $2k–would rather wait and budget for something more customized in a year or so when she stops growing.

Thanks!

I’ve had luck with the newer Beval Naturals. I have a OTTB with a mutton wither and narrow flat back. Another with a flat, short, fat back. It’s been the best saddle besides my Voltaire. I think they are foam flocked sadly. Kinda hard to find but they usually run under 2k on ebay. Still kicking myself for selling it. I ended up with a 09 devoucoux that’s a regular tree but almost too wide/curvy for my two.

Though not trendy etc in the hunter jumper world I would imagine, a used Passier would be my suggestion. My guy is a narrow/slender ottb with a fairly straight back and I have a Passier Wellington close contact that fits him pretty good (I have a Passier Grand Gilbert as well). The Wellington is a nice saddle and it’s wool flocked.