In your 3 choices, you've got 2 different speaker types. What are your goals for a tower speaker? You have a tradition dome tweeter in the M2WL8 and you have an Horn Loaded Compression Driver in the 9" KMFC9 and the 8" Rev-8.

All three can be plenty load for surfing a party cove listening, but if wake range projection is your goal, you will be better served by an HLCD.