Been using my Type-B now for a number of months. I know small form factor keyboards aren't that popular here, but this has seriously been one of the best boards I've used.

The black anodization is perfectly smooth, with no texture seams or blotching issues. The typing feel is a perfect balance between a firm and soft bottom out, with the soft flexiness focused on the spacebar. And the sound is great, with no foam or acoustic tweaks needed. It's a little more balanced towards the loud end, with a bright and poppy sound.
https://youtu.be/JrNO2xOSDas?si=hU-6vs34guHRHCaQ

Unlike the majority of HHKB layout boards, the Type-B follows the "true" HHKB layout with an assymmetrical bottom row with a 6U spacebar. Unfortunately this does mean that keycap compatibility can be a little cucked at times, but I do like the aesthetic of the larger right blocker. I might add an HHKB sticker there in the future. Also unlike most HHKB layout boards - including the modern iterations of the actual HHKB - there is a USB 2.0 daughterboard on the right side, with support for 2 USB devices. It's a good spot for a wireless mouse dongle.

For the mounting system, you have both a classic top mount and a "hot dog" mount, which is essentially just little gasket strips cut in a hot dog style which the plate sits on. The top mount is more firm and boomy, while the hot dog mount is a little softer and more full sounding. The screws on the top mount were unfortunately a little overtightened from the factory, but thankfully no strips.

I built it with Gateron Milky Yellows KS-3, lightly lubed with 205g0, and spring swapped with 55g TX Springs (M). I had originally built it with Cherry MX Blacks because I wanted that OG sound, but there must have been a factory defext with my switches as they had unbelievable binding on the bottom out. It almost felt tactile. Gateron Yellows never disappoint, though.

For anyone that's interested, there's still extras on Cannonkeys.