Felco are still the best secateurs in my opinion.
I agree. I've only got one Niwaki tool, the hori knife. I go to the Japanese company ARS for loppers and shears, Burgon and Ball for sickles and Sneeboer for digging forks and perennial spades.
There's also a charity shop around the corner that sometimes has old garden tools. A recent find was a rather fabulous pitch fork, with an oak handle, for £3. Irrisistable! No idea what we'll use it for but something will come up.
Sharpening tools is a thing for me too. I sharpen the tools of the people I work for as well, in part because the clunking sound of blunt secateurs bothers me, but also because I enjoy doing it.