Well worth a trip to Carters of Preston....they have a super selection for you to choose from on display, all set up too.
Having used them for over 15 yrs i can honestly say they do a very good deal (usually throwing in all the bits u need for elaticating top sets) and at a good price too.
Plus and i think this is most important....once they have your money its not one of those shops where they dont want to know u anymore. Always good to resolve any probs or for getting hold of spares you may need at a later date.