I just dealt with the same issue on a nottingham raleigh and I used the YST threadless BB...I have only ridden it about 4 miles so far so I can't really say too much about it at this point.....some may say that you have to have the frame chamfered for the BB to sit correctly but I just filed the inside of the BB shell to an angle and it seems to work so far
your other options include getting phil wood cups but I think the cups alone are like 35.....I got my YST for 17 shipped i think