I had the original iPad, but sold it after a few months. I just can't stand the iEverything lock-down ecosystem.
My next tablet device was a Kindle Fire. Really slick hardware at a great price point.. but again... totally restricted in what you can do with it (thanks to Amazon's attempt at lock-in). The Amazon app store is a joke and their crippled outdated Android builds mask what the device is capable of. But... with a with a *lot* of work, I got the Kindle Fire rooted/unlocked and am now able to flash new OS builds onto it (CyanogenMod rocks!):
While my new iPad runs warmer than my fiancee's iPad 2, our 15" and 17" MacBook Pro laptops run hotter (though the MBP's built in fan rarely kicks in). And the Dell craptop I use at work beats them all, with the built in fan running fairly often.
And it looks like CNET has test results that confirm the relative "toastiness" of the new iPad to other devices -
I have talked about testing devices for heat in the Mobile Devices forum and there is a direct relationship with the heat, network activity and software behavior. Mobile device testers, no matter the device must start to understand hardware/firmware/software system integration testing to truly "test the software" and not just focus on application testing.
I am going to be doing a presentation/white paper on this type of testing in July at CAST2012. PM me if interested in learning more. The topic is called: "Mobile Device Testing...To Boldy Go..." and yes, I plan on having a Star Trek theme. [img]/images/graemlins/smile.gif[/img]