Best (or worst) record producer?

[Bossy Monkey]

You know, I don't even have a suggestion. Phil Spector is widely ridiculed, especially here, but if memory serves he was responsible for "You've Lost That Lovin' Feeling". Roy Thomas Baker similarly went in for walls of sound but it worked, at least say on "Bohemian Rhapsody". Some people praise Eno for what he did for Talking Heads and U2 (with Lanois in the latter case); others blast him/them for same. I also want to say nice things about Bob Johnston for his work with Dylan and S&G back in the day. Probably not the most popular guy in Newport back then, but what can you do?

Worst, just on general principle, is probably Alan Parsons, even though I'm the idiot who'll actually admit in public to liking "Year of the Cat" (the song and the album). Or Jeff Lynne; though he's been a personal hero of mine for far longer than I am willing to admit, everything he's touched since ELO has turned to bilge. He seems to be a lot of help with the songwriting, because the songs on Petty and Harrison records he produced tended to be better than average, but the awful backing vocals straight from "Out of the Blue" tend to detract.
Or Puffy, just because he can't settle on a nickname.

First ever EDIT to add question marks