For the most part, I loved my 3. I still remember the first time I saw that retina screen, I was amazed.
I did not always enjoy having a heater in my lap, and the occasional lags and crashes were annoying. I don't use my iPad for gaming, but more business-related uses. Annotating PDFs was torture on the 3. I finally found an app where I could at least get it done without nearly throwing my iPad at the wall, but that doesn't mean I still didn't think about it occasionally.
I never complained about the weight/size of the 3, but I did notice a difference from the 2. Overall, I probably didn't really need to upgrade - I just wanted to, and had the means to do so, so I did it.
Holding the Air after the 3 is like holding my petite 2 year old niece after trying to pick up my long and lean 8 year old - it is an amazing, very noticeable difference. There is no heat from the Air, doing the same activities I was doing on the 3. It is snappier, and overall smoother.
Even if I wanted to go back, I couldn't, as the iPad shuffle has already taken place. Our son, who inherited my iPad 2 16 gb when he decided to keep that and have me sell his previously-inherited 4th gen 64gb iPod touch to pay for my 3, decided to take our deal of an early Christmas present of my 64gb 3 since he was always running out of room on the 16gb 2. The 2 is going to MIL as an early Christmas present. So I guess I'm "stuck" with the Air.
🙂
FWIW, my son LOVES the 3. Or so he says. He mainly watches videos and plays Minecraft, and hasn't noticed any issues. He says it's faster than the 2 (of course, he could be saying that just so he doesn't lose the extra 48gb of space we gave him!). Of course, he did just put Infinity Blade 1 and 2 back on it now that he has room again, so we'll see how those do!
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My big issues with ipad 3 were horrible battery life and it took forever to charge.
How quickly I forget. Battery life and charging time are TERRIBLE. I now charge the 3 with the 12W charger that came with the Air, and use the 10W from the 3 to charge my Air.