I grew up with ETI, they had some excellent 'serious' projects such as the Vocoder and the Cortex computer. Working out how things like that worked, with the PSU module, keyboard, memory, audio filters and so on, taught me more about electronics at an intuitive level than university ever did. A few months ago there was a BBC TV series on 1980s synth pop music, and I think it was Martyn Ware from The Human League who said his first synth was built from an ETI design.
At the top were mags like Wireless World, ETI and Elektor, with Everyday Electronics and Practical Electronics towards the bottom end of the market, recycling the same projects every few years. Bath overflow monitors, microphone pre-amps, disco lights etc. Not long ago, one of the torrent people scanned and uploaded almost the complete set of Elektor up to the mid 80s. It would be nice if someone could do the same to the old ETIs.