I switched from PT 2.3 to the 4.0b y2k fixed, and that's what I still use on my Amiga the few times when I do some tracking. I think it has a very good and easy interface. PT II looks more like old PT2.3, but I hope they at least tone down the colours a bit. It's nice with eyecandy in the beginning, but when you've sat a whole day staring at it, you wish for more moderate colours =)