Yes, the LCD is cleaner and brighter, but honestly, it's still sadly lacking. You never could hold it up and show an AD that screen, if there was money on the table.
Thus, it requires tethering. So, in effect, the LCD is still pretty useless.
I found color in the plus backs to be identical, if not worse. In both P45+ and P30+. More green. Green is good, I guess, if you're a landscape guy, but green ain't good if you're a people guy.
Yes, better at high ASAs. Cleaner files.
The whole thing reminds me of when you get a new G5 -- you read the specs, and get excited, thinking it's going to blow the doors off the last G5, and then, you turn it on, and it's pretty much just like the last one you had. Same kinda thing applies with the Phase Plus series to me. I actually refused the P45+ and traded it for a P30+. And in the end, I use the P21+, which was going to be a back-up insurance policy. The P21+ is super fast, and with a IV card, never makes you wait. I end up rezzing down even the P21+ files most of the time, so I'm not in need of gigantic, pipe-clogging files, at least for commercial work. The P21+ is just fine.
I just don't want to lay my eyes on that LCD of the new Canon. When you get into a 3 inch LCD size, now you're getting serious. Why Phase can't make a usable LCD just makes me wonder. The whole Phase design seems long in the tooth, to me. Fine if you're a catalogue guy, tethered in one spot, to a Mac, but beyond that, I'm not sure...
Just one opinion. Everybody's style is different.