I have an old Malvern Star (formerly 12 speed) singlespeed road bike - circa early 80s.

The cup and cone bottom bracket is a bit crappy now, it feels rough and noisy very soon after a service.

I'd like to put in something new!

Some of the cheap replacement ones seem a bit heavy - heavier than the original even. I'd like something that's gonna feel smooth, be not too heavy, and low maintenance. Im not sure - maybe I can put in something sealed instead of an old cup and cone set up?

Looking at mid range budget, not super dooper fancy. Any suggestions?