Just calculated my gearing...

Got any good links on this, genuinely interested but not heard this before.

http://www.google.co.uk/search?q=cycling+cadence

Most if not all links will tell you that higher cadence is better, mainly because it is less tiring.

horses for courses.
jan ulrich and lance armstrong being a brilliant example.
Not quite true. Ulrich still had a high cadence compared to normal people, maybe 90 RPM? Armstrong is the other extreme, about 120 RPM which is too much for most people. Armstrong's high cadence is well documented, and many have attributed it to his success in climbing and the Tour in general.

Obviously there's not a specific number for everyone, but It puts some weight into the argument that one of the biggest grinders of recent years still had a cadence above most of us. Ulrich has been hailed as one of the most naturally gifted cyclists of all time. Who is to say that he wouldn't have been better if he had trained for a higher cadence technique since the beginning of his career (you can't just switch).