Tabula42
Gläubiger
I'd say it depends on the difference in quality or if there was censorship. Since many studios just rush out an anime to fit the schedule, then go back over it and redraw in better detail for the blu-ray. Same goes for censorship, some anime have terrible black bars that can sometimes cover half the screen. So if the tv version is like that, then I'll either wait for the blu-ray, or rewatch it when blu-ray comes out.