The gulf live rock from this Tuesday just at arrival
Both overnight shipping with wet paper. Kp is more porous and has great shapes and holes with sponges and tunicates, gulf is more boulder like with lots of plants, clams and at least 2 corals with some healthy tissue.
kp ships only in water now I think. A mix of both could be interesting.
just google both and look at videos, kp are great and willing try to fill your special request if you have any about size and shape if it’s possible.