Eric definitely has one of the largest Technic collections. He is also one of the few people who had the vast majority of his sets assembled and displayed nicely.
Several other AFOLs including myself have comparable collections. I own at least 95% of all Technic sets and am constantly adding more.
Unfortunately only the sets from 2000 forward are assembled. My earlier sets are still disassembled since I moved my collection from Europe to the US a wile back.