here's a sound comparison vid i found:
the qfr with reds would probably be your ideal if it is "quiet enough". TKL and custom keycaps are huge advantages. i would love participating in a lot of the group buys here but i have topre and almost never touch my quickfire pro with browns

however, if a quiet keyboard is such a high priority, then matias is a good choice. the ebay listing is also "best offer", so you could try negotiating for like $70/$75 shipped. if you want a smaller form factor, maybe wait out for a deal on matias quiet pro mini or try to find a used one.
keep in mind if you buy both and plan to return one, you would likely have to pay return shipping which would be ~$12
also just throwing this out there, you may want to consider the microsoft sidewinder x4. it might be blasphemy recommending a rubber dome keyboard, but it is quiet and goes for like $35-$40 on sale