50 mm chainline, bb/cranks?

im looking for a bottom bracket, crank combo thats going to give me a 51 mm chainline with as few spacers as poss, 51.5 mm would be even better.
68 mm english thread bb.
must be bombproof, value for money (i don’t mind spending if its worth it).
Any Ideas/ experience?

Bombproof, value for money… Sounds like you need a Phil. Contact Lynn @ Chainring Transit Authority, or Dan @ Shifterbikes.

A standard MTB triple places the outer ring at ~52mm, so increasing/decreasing the spindle length by a small amount will get you where you need to be.

Have a look at these:

You should be able to pick a combo that will get you pretty close and tweak from there.