regarding P45 (I guess P25 and P30 ) files and PS ,
( it is " unofficially" supported since several versions of ACR )
I think recent Adobe Camera raw ACR 3.6
gives a decent coversions miles better then 3.4 ,
I like ability of seeing / opening files in Bridge .
I hate C1 for its cluttered workspace .
Any P45 files opens much faster in ACR 3,6 then in C1 .
It is easy to make contact prints and web galleries from Bridge .
I try to open a P30 file in ACR 3.6, but it only open a small thumbnail file, not the TIF file.