Despite the lack of rim and tire choices, 27" wheels do have positive aspects. For a bombproof beater conversion, the wider rims and somewhat fatter tires available for 27" are a good thing. I'm tall and the bigger wheels make my huge 62cm frame look more normal. Right now I have my 27" wheels crammed into an old Centurion frame that was built for 700c. As a result, the bb is as high as my Bareknuckle, and the clearance is really tight making it look a lot better.