I've always thought that size matters - I've even had Mrs Hatter kneeling in front of me with a tape measure before now.
This was of course to determine my vital measurements that I then keyed into a specialist website
However despite the fact that this fitting site and other research suggests I need a 57cm/58cm frame I've recently been wondering how much this matters. A few things have changed my view - one was a comment in the last Rouleur where frame builder Ron Cooper seems to suggest that since we now have new style (ie non quill) stems and greater options on seatposts there is less importance on frames size. Also looking at Webline the very experienced Alf Webb offers only one size in his winter bikes (which I was very tempted by).
However the question has come to the fore for me due to the opportunity to purchase a rather lovely Condor tourer/cyclocross machine which has a compact seat tube of a mere 50cm (c-t). The effective top tube is 55cm.
So what are the thoughts of the esteemed forum - should I buy a smaller frame and make it work or will it always be a poor compromise?