With regards to television, I've pretty much stopped purchasing DVD versions of shows broadcast in HD. There are quite a few shows I would purchase, but not when I know that better versions exist.
I say something like this to myself frequently. But in practice, most of my tv season set purchases have largely been driven by price considerations, and whether I have seen the episodes already.
Usually I'll hold out for the bluray version of action and/or sci-fi type shows and movies. Though over the last year or so, there hasn't been much of interest to me in either catagory. Lately I've been watching Defiance, Orphan Black, and Continuum, but I don't think I'm going to bother buying the bluray sets. (I have seen every episode to date, 3 or 4 times already). In contrast around a year ago, I picked up the first four seasons of Fringe on bluray, largely due to finding them on sale and never really watching the show before (other than a few random episodes).
More recently, I picked up the season 1 dvd set of Homeland after previously watching the pilot episode on a basic cable channel, and finding the dvd set at "dump bin" prices the next day (ie. around $15). I thought about waiting out for the bluray version to come down in price, but the lowest price I saw for it at the time was around $40-$50. (I found the pilot episode somewhat compelling).
In the case of season 1 of Person of Interest, I was watching season 2 at the time but previously didn't see season 1. So I ended up picking up the bluray set when it was around $25 back in November. I probably won't bother picking up season 2 bluray set, where I have watched most of the episodes two or three times already. (Some of the better season 2 episodes I have watched 4 or 5 times already, such as the ones with Amy Acker and Sarah Shahi).
Edited by jcroy, May 29 2013 - 11:12 AM.