Remember the Brazilian Apple II clone in an Atari 1200XL? The TK 2000 & TK 2000 II? The company is called Microdigital.
Well, they also did Sinclair ZX80/81/Spectrum clones as well, but the best one, and most compatible was the last one they did, the TK95. The interesting thing about this Spectrum clone is it used a Commodore Plus/4 computer case!
I want a Spectrum with a real keyboard, like the later models after Sincliar sold out, but this one is interesting too, it's said to have a better keyboard than the real Commodore Plus/4 too, "semi-professional." looking at the picture in the link above in close-up, the keyboard does look like at least 800/1200XL quality build.
Microdigital also released a TK 3000 IIe, a clone of the Apple IIe, but it came in a much more Apple II like case. All the earlier ZX80/81/Spectrum clones from Microdigital also had cases similar too original Sinclair cases for the respective models. Previous to the TK95, was the TK90X with has the usual Spectrum case with rubber keys.