You have to be fussy about the TVs. There are two main issues.

1) Input lag. A mouse 200+ms behind is frustrating to work with.

2) Color space. I forget the terms off hand, but basically if the panel has poor colour space / bit depth / whatever, fonts start looking really bad.

Maybe you lucked out or just don't notice/care about these, but that's one of the core reasons people don't use TVs.

I'm quite tempted to get a large good one though.