Too much work to count them. It's mainly a steel collection in models I like: Military, Para2, Endura, Manix2, and most of the mules. Passed on the Maxamet Para2, did get the mule. I think that steel is probably less trouble in fixed blades than folder pivots.
Got an Endura for EDC, a S110V Para2 on my desk, and a S110V Military on a shelf in arms's reach. Got a Tasman Salt there too, I got for cutting up carpets, but I think I'm going to use a jig saw for that in the future.
Got a few fun things like the USN forum stuff, the Ulize, a Kahr Arms Delica, Phil Wilson's S90V knives, and a couple of Workers. Caught and released a Nirvana.
How many get used ? Let's just say I haven't sharpened a knife in a few years.