personally, I have choosen the L1MP over the PP because the Moonphase is not obstructed by the date pointer. The L1MP has a big date which is much easier to read compared to the pointer date. I own a UNION pointer date as well and since I have the L1MP my UNION rarly gets on my wrist
The RL is a very different watch. I is worth the money but I just dont like a trunkated index or number on the dial...
For my next watch I would opt for the IWC Portugieser PC II.
Let the watch speak to you!
Good luck with your decision.