LCD screens for DV editing ?

[Sean]

What do I need to know about DV editing before replacing my CRT monitor 
with an Apple Studio Display or a PowerBook?
I've read that pros who do a lot of PhotoShop work should stick with a 
CRT. Is the same true for working with DV?
Can you edit efficiently on a 12" PowerBook screen with iMovie? with 
FCExpress?
Does the extra real estate of a 17" PowerBook screen allow you to edit 
DV more efficiently than a 15" screen or the 12" screen?

Sean