I love the solid brass ones. I had one as a kid but lost it over the years.
Gotta include the zippo refill/flint/tool can. It brings a lot of peace of mind to carrying just the zippo.
I guess it is a misnomer to say I carry only the zippo... In my bag at any given time I think I have a rope ligher, a book of matches, two zippos and the fuel can; but I use the one zippo almost exclusively now.
I was looking through boxes in my basement storage and found an old lighter from '03!
I've searched for it many times over the years, finally gave it up as lost forever when I bought the three above.
Like finding an old friend!
I think it is solid brass. It seems to have a more smooth action, and weigh less than my new zippos. I definitely prefer the feel over the black or colored coatings.