For me, it was way back with Vegas 3.0, purchased in 2003.
I had been using Pinnacle Studio 7, which I think came with some hardware I had bought. Studio 7 had a nicely designed UI, but was unstable and crashed a LOT. I remember seeing the Vegas 3 software box in Best Buy of all places. I had never heard of it, and quite frankly, it looked like the kind of software that says it does everything, but doesn't do any one thing well. So I went home and did an internet search, and that's when Vegas' reputation came into play. Everybody who used it was praising it. It was ahead of the big boys back then, doing things that Premiere hadn't implemented yet. I went back to the store and bought it and have never looked back.
I had been using Pinnacle Studio 7, which I think came with some hardware I had bought. Studio 7 had a nicely designed UI, but was unstable and crashed a LOT. I remember seeing the Vegas 3 software box in Best Buy of all places. I had never heard of it, and quite frankly, it looked like the kind of software that says it does everything, but doesn't do any one thing well. So I went home and did an internet search, and that's when Vegas' reputation came into play. Everybody who used it was praising it. It was ahead of the big boys back then, doing things that Premiere hadn't implemented yet. I went back to the store and bought it and have never looked back.