In the past there were various models with Brass liners, however they stopped that a while ago.
Currently it should not be too hard to find various versions of the 100mm Gardener, Grafter, Prunner and such with Brass Liners (the premium models).
Other than that probably the Pioneer with Brass liners is the easiest to come by on ebay, but you'll have to be careful and often this fact is not noted on the sale.
I don't know if they are better, but I like Brass. I like everything in Brass.