thanks rod what you describe (P0 + classic QR) is what i would prefer, giving the option if i understand you correctly of using either kirk/RRS plates or the new monoball plates. with that option any new plates that i would buy would be arca, but still able to use my old kirk plates.
your description of the L bracket is an added bonus. the universal L brackets from other vendors are relatively cumbersome.
however, there are two problems and i would love it if you (or anyone else) can help me out.
1) i don't see the P0 offered with "classic QR." BH and adorama have the option of slidefix QR, or screw stud. where does one find a P0 with the classic QR you describe?
2) today i received a P0 that i ordered last week online from BH, and with the following observations
A the ballhead mechanism is very stiff, requiring quite a push to get the ballhead to 90 degrees. other high quality ballheads that i have used in the past (arca, RRS, photoclam, etc.) have been quite loose when the tightening mechanism is released, with some gradation if partially tightened. this P0 locks and unlocks with a short turn, and goes from locked to a fair amount of stiffness.
B the panning mechanism does not seem to work. when i loosen the small lever, no rotation is possible with reasonable force. further turning of the lever screws it off.
C when i turn the locking ring to unlock the ballhead, the base tends to unscrew from the tripod. is it necessary to locktite the base to the tripod?
i am assuming that this particular P0 is defective. is that correct or is there some adjustment that i am unaware of?
i would really like to be able to make this work especially with the universal L bracket you describe.