The only thing I'd say to that though, is that Pads are a lot cheaper than a gearbox ;-)
Just out of curiosity, what sort of RPM will the engine be at when you drop into 3rd at 70mph?
Actually I was wrong, it drops into second when I floor it at 70mph or just below. It goes in at about 6000rpm then drops into third at about 6100rpm ish which gives just over 4000rpm - enough to just be inside the ACIS band anyway.
When actually moving the Auto box is great. It's just a bit crap off the mark as the jump from first to second is too great.