Depends on what you like. Maui is more laid back and Oahu is built up. We did Maui a few years ago and loved it. Took the road to Hana, very cool. You can take a van or bus tour to get there or drive your rental car but the road is very narrow with a lot of tight curves. You can drive up to the top of the volcano. If you go in the fall go during Halloween, they have a big party/parade in Lahaina. All depends on what you like. Give me some more details and I will help you best I can. about 6 years ago
Definitely island hop!
Big island: kona for beaches, Hilo for old town and closer to the volcano
Maui: wailea for hotels, less windy that kanapali and great beaches check out Kiehi cafe for breakfast... Feast of lele in lahaina... Although it is pricey it is worth it!
Honolulu: north shore is best! Waikiki is to touristy... If you must, than a sunset and cocktails at the royal Hawaiian at the Mai tai bar. about 6 years ago
I got married on Maui last year and it was amazing - great place to honeymoon!
Oahu is great for a couple of days, but is Waikiki is essentially a tourist trap. See what you want and get out! North shore is very beautiful.
Maui is my favourite island. You can stay in anything from a 5 star luxury hotel (the Wailea Marriott is stunning) or a serviced apartment if that's more your thing.
Make sure you go to Big Beach (Makena, on the Wailea side of the island), do a Molokini snorkel trip, and the road to Hana if you're up for a long drive - the black sand beaches and the pools of Oheo are worth it!
Driving up to the top of Haleakala and watching the sun rise is also an amazing experience - a very early start, but the view is unbelievable!
Make sure you eat at Cheeseburger in Paradise - they have amazing burgers and the fries are the best I've ever eaten!
The Big Island is very beautiful, but very wild - black sand beaches, the live volcano, steam caves and hot pools.
Apart from Waikiki, renting a car is essential! about 6 years ago