Except for the original iPad. That still stings a little. They released it in 2010 and dropped support in 2012. But it was basically unusable with iOS 5 in 2011.
I bought three of the first four iPad models (I was working at a big cellular provider, so I got them at a significantly reduced price) -- each of those early models made substantial performance gains. The fourth model they shipped (the second with the retina screen) was the first one I'd feel comfortable about recommending to friends and family -- it held up well, the screen was unlike anything else on the market at the time, and it didn't weigh a ton.