I tried many but I found JVC HC-serie and perhaps early SONY to have good keyboard. Later SONY was different experience not so good (too hard), but overall JVC had really really good keyboard.
So of all keyboard/computer you tried, which is your favourite?
Do you mean only separate keyboards, or also the integrated keyboards?
Anyway, it's hard to state which one has the best keyboard because some parameters are subjetive, like the layout, presence of a numeric keyboard and the design of the cursor keys. Regarding the quality of the keyboard construction, my opinion is that:
The majority of Sony models come with Mitsumi keyboards. Those are of excellent quality.
IIRC, Sanyo machines come with Mitsubishi keyboards that are of excellent quality too. This includes the Philips machines made in OEM by Sanyo, like the NMS-8250/55/80.
There are many other MSX models with Mitsubishi keyboards, like those from Toshiba, some from Hitachi and some from Mitsubishi themselves.
Panasonic machines varies. Some come with very good Mitsubishi keyboards, like the FS-A1. Others have Matsushita's own keyboards that are so-so (too noisy and slightly toyish), like their MSX2+ and Turbo-R models.
The Sharp Hotbit has a very good keyboard too, and very silent. But it has a rubber mat inside that will harden with time, so many who never used it back in the days will think that the keys are too heavy these days. A good treatment of the rubber mat with silicone gel will rejuvenate it to its original smoothness.
Ah I meant integrated also external but mainly integrated. I think HC series of JVC/Victor was really good quality but regarding their prize when sold compared to lower cost models maybe they used higher quality.
How about the worst? It's not the Philips VG-8000's or VG-8010's, nor Casio MX-10's. (Those are poor, but pretty precise at least.) It's the one on SVI 738 X'press! It may look ok, but it's the worst I know.
NMS-8250 has a pretty good one, and Yamaha CX5MII perhaps even better. But if my memory serves me, Canon V-20 had the best MSX keyboard I know (sadly I don't have that one anymore).
I have a Philips NMS 8280 and the keyboard is my least favorite part of it. The keys are squishy and squeaky. The keyboard itself it rather light but has a thick cable and a giant connector. The only thing good about it IMHO is the layout. Again IMHO but Yamaha YIS-805 keyboard is far better, especially for gaming.
