What is your favorite lighter design? I think mine is the Dunhill Rollagas. However, I've owned a number of old Dunhill lighters, and some of them have just been tedious: solid sterling Unique; two '70s Rollagas; a gunmetal Sylph. They never worked or leaked. I also used to have a '30s solid sterling ribbed Cartier lighter which while nice, didn't exactly work that well either. I suppose the S.T.Duponts are also rather pleasing, but they are too rectangular for my tastes, reminds me of cigar lighters.