The Daily Telegraph has published a list of all the Underground lines in London from best to worst.
Mist people who live here have a favourite line and a least favourite. We love the Piccadilly and absolutely hate the Central, at least until it gets out into the countryside.
Depending on your browser etc you may be able to read it, or not. If you can’t, the winner is the Metropolitan line, of course. Worst is the Bakerloo.