Probably my Fisher Procaliber - fitted well, rode fantastically (though rose tinted glasses and all that). I may end up regretting selling my Eddy Merckx more in the long term because I loved the paintjob, but at least I know I can buy another one in another colour, wheras I've not seen another Procaliber in my size for sale since. If I ever sell the XLM then then you're all welcome to come round and throw neon Etto helmets at me.