Nice idea Stu. I'm currently using cache2-dbln.server.ntli.net which I selected at random from Robin Walker's pages this afternoon. Prior to that I had no proxy specified and was suffering slow page loading, or in one or two cases pages failing to load at all (
www.scifi.com/battlestar for example - finally got to see the miniseries this weekend!

). AFAIK if I don't specify a proxy I am dealt with transparently by one of the Luton proxies. Until a few weeks ago I had one of the belfast proxies specified, but then it began refusing to load one particular site we need quite badly at the mo (
www.gspc.co.uk because we're moving house!). I've not tried it again since ditching it.