Realistdreamer your incorrect.
When iPad 1 came out there was no reason to go for more than 16gb if you didn't have a huge media libary.
Today though apps start to exceed 1gb each, and i guess even more when apps which takes ful advantage of the iPad 2 GPU.
As 16gb only leaves you about 14gb for apps, you could easily use 10 of them in 5-10 apps in the future.
i would save some money and then go for the 32gb ipad 2 wifi only when you can afford it.