Crabtree instinct caught my eye and appear to have well laid out terminals, but I've not seen them in the flesh as no one stocks them locally.
Really? I've almost exclusively used Crabtree domestic plate fittings for 45 years; first the 2000 series, then its replacement, the 4000 series. The 4000 series was revised bout a dozen years ago, with the appearance from the front staying the same, but with completely redesigned insides, and I don't think the change was made to improve reliability.
Generally reliability has been good, with the main problem being with intermediate switches, which become very stiff to operate.
Moved away from them about seven years ago, when there was some supply problems and I was (incorrectly) told, by a Crabtree rep, that the 4000 series was being discontinued.