I think the term click weel reffers to a click tactile button layout , I doubht it is a really toutch sensitive one. The only players i know that do toutch sensitive butons like the ipod that is a clone of the nano is a meizu m3 which i would definatly reccomend as i won one and they beat any chipods 1000:1
http://cgi.ebay.co.uk/Meizu-M3-Music...QQcmdZViewItem
£55 for the 4gb version (true 4gb)
The meizu pklayers are better quality than the ipods with better features and more than the chipods.