Middle of 1998 with a basic receiver and Dish that I bought and installed, then a year or so later I bought a Dishplayer 7200 followed by a 508, then added a 301, then a 522 followed by another 508, bought a 722 and added a couple of 211's to upgrade the 301 and 508's. So now I have a 722 and 2 211's all owned never subsidized. I'm not a fan of contract's and subsidized equipment.
I was a dual subscriber to Dish and Directv for about 5 years, as they each had channels the others didn't, but the Dish dvr's were so much better than Directv and cable, I eventually went Dish only around 2004-05.