Bali is very cheaper than Tahiti,in Bali you will find more tourist from Australia and China,yes Bali has nightlife,and shopping places,but you have to fly more distance to reach Bali,yes you can spend you time in beaches,there are lots of beaches and nearby Island like Gili Tawang,Nusa Lambongan,Nusa Penida etc.
Living in Bali is cheaper than in Hawaii. It costs less to find a place to stay, buy food, and get around in Bali. This means that living in Bali is a good choice for people who want to save money.
A vacation in the Maldives tends to be more expensive than one in Tahiti too. The first reason for that is the Maldives focuses almost exclusively on upmarket resorts, and subsequently very few other accommodation options exist.
To properly experience Bora Bora, three days (four nights if arriving late) should be enough. The island is small and there isn't all that much to see. If you're after a pampering luxury holiday of sipping cocktails on the deck of your overwater bungalow, you could probably spend a week (if you can afford that).
Is Tahiti Expensive to Vacation? The short answer is more often than not, YES. In comparison to the other 20+ countries around the world that I have visited, Tahiti is definitely on the more expensive side. To give you a point of reference, a vacation in Tahiti is comparable to a vacation in Paris or London.
Regardless, travelers agree that the warm waters, lush jungles and luxurious resorts are worth the splurge. Miles of shoreline, dozens of resorts, French cuisine to die for – Tahiti has all the makings of a honeymoon destination. But beach bums often pass over Tahiti's sands in favor of Bora Bora's ivory shores.
With so many beaches, water activities, and cultural connections, you should spend between seven and 10 days in Tahiti and greater Polynesia. One week to 10 days can give you plenty of time to visit Tahiti and other islands, such as Bora Bora or Moorea.
If you prefer being able to travel around a destination quickly and “see it all,” then you might enjoy Bali more. If you're looking for a destination that offers a range of different cities—each full of its own sub-culture, activities, and climates—then Thailand is an ideal choice.
Accommodation costs are generally affordable and food and drinks are very cheap. Many of Bali's best attractions are very affordable or even free and, while some activities could set you back a fair amount, there's plenty to do at lower price points too.