I got a 26" set because it was physically the best size for the space I have for the set. I also sprang for the extended warranty.
A couple of months back it developed a flaw in the picture, a thin vertical gray line down the right side when I was playing anything in 16:9 mode.
The line was probably there in 4:3 mode too, but fell just outside the screen area.
Last week I took it in for service and today (Saturday) found out that it would be replaced rather than repaired.
Now, Sets have come a long way since June '06. The equivalent 26" set is almost $400 cheaper, and the next size up, a 32" was $150 less than my old set.
The replacement was for the VALUE of the old set, not a swap for an equivalent set. So I ended up with a brand new 32" set (better than what I had), the four year extended warranty on the set, and a $16 store credit to make up the difference. Wow!
It's a bit big for the space I have though, but it'll work ...