When comparing Leopold FC660C vs Hassium Pro 108, the Slant community recommends Leopold FC660C for most people. In the question“What are the best keyboards for programming?” Leopold FC660C is ranked 9th while Hassium Pro 108 is ranked 49th. The most important reason people chose Leopold FC660C is:
Topre switches are a high end switch which typically cost a hefty premium. They have mechanical components protected underneath a rubber dome which makes them more durable.
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Pros
Pro Topre switches at a good price
Topre switches are a high end switch which typically cost a hefty premium. They have mechanical components protected underneath a rubber dome which makes them more durable.
Pro Solid construction
The Leopold FC660C is a solid and well-build mechanical keyboard. In fact, it's heavier than the HHKB (Happy Hacking Keyboard).
Pro Topre switches are plate mounted
This board's keys don't feel bouncy thanks to it's topre switch design. Since the torpe switches are mounted directly on the plate, the board feels much stiffer overall.
Pro Compact and portable footprint
If you love your keyboard enough to want to use it everywhere, it should be portable, especially if it's as expensive as this one is. The FC660C is very compact and easy to carry around.
Pro First-class mechanical switches
This keyboard uses Cherry MX switches, which are premium switches: long-lasting and solid. The Blue, Brown and Red varieties are available.
Pro A wide variety of light effects is available
Light can turn on and dim-off on a per-key basis and there are laser beam, ripple explosion and breathing effects available. These affects can be self-programmed.
Pro Offers choice of LEDs
Both white and blue LED backlighting is available.
Cons
Con Can suffer from squeeky "plastic on plastic" rubbing with the case
Con Very expensive
Con Non standard key sizes
Non standard key sizes means your aftermarket keycap options are limited to non-modifiers. This issue also exists with virtually every other keyboard that utilises the Topre switch.
Con Non-standard fonts on keycaps
Papyrus and Comic Sans fonts on the keycaps.