Personally, I find Kaanapali *WAY* too tourist-trappy. It's the one place on Maui where it's tough to find free parking, even if you're staying at their hotel. Food is expensive, and you're a 10 minute drive to Lahaina, and a 45-60 minute drive to South Kihei.
If your goal is relaxing with some diving, I'd suggest staying in Kihei -- the Mana Kai has been suggested... you'll find better deals on the other side of the parking lot from them at the Kihei Surfside.
If oceanfront isn't required, there are plenty of good condo options in Kihei, as well. I've seen some nice units in the Luana Kai, that while "oceanfront" there is an expanse of grass between the buildings and the beach.
Finally... when exactly are you coming? I'd be more than willing to go diving with you -- though I'm off-island for part of November.
If your goal is relaxing with some diving, I'd suggest staying in Kihei -- the Mana Kai has been suggested... you'll find better deals on the other side of the parking lot from them at the Kihei Surfside.
If oceanfront isn't required, there are plenty of good condo options in Kihei, as well. I've seen some nice units in the Luana Kai, that while "oceanfront" there is an expanse of grass between the buildings and the beach.
Finally... when exactly are you coming? I'd be more than willing to go diving with you -- though I'm off-island for part of November.