I'm with Boxer..
.me.uk's are a great alternative to the .co.uk's and .org.uk's and I think will be a good investment for the future.
Many have been put off by the Nominet rules - but as long as it's regged in an individual's name rather than a LTD Co, you'll comply with the regulations.
As for ranking - there have been a number of success stories on here, but I have no personal experience in this.
As good short .co.uk's become more elusive and expensive, .me.uk's will become a more viable alternative for mainstream users... and the value will rise accordingly.