Recs.
Updated
The Cherry G80-5000 keyboard is a mechanical keyboard that features split keyboard design for ergonomics. It may even be the first mechanical keyboard that not only features the split design (as Lexmark M15 did), but also allows the keyboard to be raised into the shape of a tent. In this aspect, the uTron keyboard has a similar approach.
Specs
Pros
Pro Split ergonomic design
The keyboard could be used either normally as a regular standard keyboard, or the keyboard be split apart (to prevent pressing the wrong keys with the wrong fingers for instance), or even be raised up as to not require one to have their palms resting on a much lower space. This basically gives one the advantage in possibly not "overstrain" their limbs when using the keyboard as well as encouraging the correct posture for typing.
Cons
Con Rare
Cherry has already ceased manufacturing G80-5000 before the new millennium (year 2000). As such it is hard to source the keyboard as easily.
Sourcing the keyboard with the numpad is even more rare along with sourcing the numpad alone for the keyboard. One maybe able to source the Cherry G80-3700 as a replacement, it is inevitable otherwise hard to source Cherry G80-5700.