Introducing my end-game keyboard (maybe?):

Name: HHKB Type-S
Switch: 45g Topre Silenced
Keycap: PBT

Additional Keycaps:

• PFU Color Key Top Set (PD-KB400KT01)
• Massdrop Topre PBT Space Bar (https://www.massdrop.com/buy/topre-pbt-spacebar)
• Artisan Keycap ‘Trooper - Black Red’ (https://www.hotkeysproject.com/products/trooper-black-red)

As of today (7/19/2018), the artisan keycap is still available on the website. It was shipped from Hong Kong and took about 10 days to deliver (pretty satisfied about the shipping comparing to 3 months for the PFU one).