EricTheDood
Contributor
Thanks for he input everyone, I couldn't decide on which to do, so I did both. Visibility on the back wall was awesome and we came back and did some snorkelling on the front side later on in the week and that was pretty amazing as well.
We dove two sites off Lanai; Monolith and 2nd Cathedral and both were great. Visibility wasnt quite as good on Lanai but was still pretty spectacular (seems like it's hard to beat the vis at Molokini). The structures off Lanai are pretty interesting, the caverns are massive and really quite fun to explore!
Molokini generally has the best visibility.
Weather conditions have reduced visibility in Lanai lately, but it can be as good as Molokini when mother nature cooperates.