The issues you describe have affected only a very small number of iPads. If you get an iPad with a major issue, you can return it within 14 days for a full refund. You get a 1 year warranty on both the iPad 2 & iPad 3.
What are all the differences between the iPad 3rd Gen and the iPad 2? Is the iPad 2 worth the cost savings?
What are all the differences between the iPad 3rd Gen models? Which should I buy?
Should I Buy a New iPad? Or an iPad 2?
iPad 3 vs iPad 2 vs iPad 1- Feature comparisons with iOS 5
A Few Questions (and Answers) About the New iPad
New iPad: A Polishing of the Old
iPad 1, 2 and New Specifications
How much content will fit on my iPod or iPhone?
If you think you may get an iPad 2:
Refurbished iPad Prices
New 16GB iPad 2 Prices
Further to TMM. There is no point in purchasing a device with the lose idea of returning it for a refund within 14 days. Have you experimented with a friend's iPad or even one on display in an Apple store? If you even Google 'Apple iPad tutorials' you might get some further enlightenment.
I recommend the 32gb model at the very least.
These problems aren't enough from stopping a person get the new iPad because it does not exactly OVERHEAT. It just heats up a bit more but won't cause any issues. Charging may be an issue but not an issue to stop you getting an iPad.
Look at the bright side
5 mp cam
By the way I got my iPad from Dubai, UAE at the Dubai mall. And gave me international warranty.