Knew a guy who owned a shop in the same town I ran a shop in and he collected SATA limited edition spray guns. Had them hanging on the walls in the hallway between his office and mixing room. Had one he paid $4000 for. Never used it...
Of all the guns I used over the years my go-to ended up being a Binks M1-G with the 3M PPS cup system. Cheapish, easy to use, easy to clean, durable and the 1.4 tip sprays just about everything I use except hi-build. And I have a cheap old Fleet Farm gravity feed for that. Now that I'm out of the business I don't really need the high end gun$ any more.