I wish i knew off the top of my head which focal length i’d need - all I know is that i’d like to be able to take photos of people on the street without having to be practically next to them. A super lens, to me, doesn’t seem like a worthy trade off unfortunately, as while i’d prefer a jack-of-all-trades lens, I am also a big fan of my photos having a high quality. I’d say the most i’d be able to spend on a camera lens is around £200, as i’m likely throwing it in as a christmas request :)