I've found that it depends on what sort of amp you have whether you choose one Tubescreamer over another. I have a TS808 which I love to bits through my Fender-ish Cornell Romany. It did very little in front of my Plexi and I only held onto it in case I one day got a more Fender-ish amp which I then did and it's become my favourite pedal since that moment. For me TS808 into something Fender-ish = big win.