I don't collect, I use them. However, as new stuff comes out, that is better and more useful, I pick it up and therefore accumulate knives. For example I've got a Remington, Dexter Russel, and a 440A custom fillet knife, all accumlated over time in an attempt to find a good one. Recently I purchased a Phil Wilson custom job in CPM 420V, with desert iron wood scales. It's the best fillet knife I've ever seen. It cuts like a razor, and is light weight, beautifully curved making it the perfect filleting tool. So, now I've got 4 fillet knives, even though it didn't set out to collect anything. For folders I've got a Wegner jr. and a MT Socome Elite, M/T. I carry the small one for dress and the MT for every day. I use the hell out of both. I guess that makes me an accumulator, rather than a collector. I can't imagine purchasing a knife that I am not prepared to use.