screen - IMHO - no - this is a downside to MFDB for sure. I have the H322 and the screen is terrible - good to check composition and the histogram, but thats it. my 5Dmk1 screen blows it away by longshot
my battery life is very good. I can shoot all day (7-8 hrs) tethered on 1 battery, untethered in normal temps all day on 2-3 batteries. i dont look at that lame screen that much tho - just to check histo occasionally - it can be displayed on the grip too, so I dont look at it on the back too much
I would seriously consider not upgrading from small format based on your other post. I dont think I would have got into MFDB if the 5D2 was out 18 mos ago when I bought mine...I'd have a5D2, 85 1.2, etc, etc. the H system isn't nearly as affordable to build than Canon/nikon - one battery is $212, zoom is HUGE and $3-4k. now my hassie isn't worth selling so I'm kinda stuck with it. I love it, but isn't worth it at this point for 22mp...