Same as cranioscopical, root the device as soon as you get it and remove everything that's not required, (or flash a ROM that does what you want, not what the manufacturer thinks you want) - makes for a much more pleasant experience.
-4wd
But I want (some of) the other things. Just not everything.
A couple more pros- the ability to put widgets on the home screen that do varied things, and the ability to position anything anywhere. I also love having the mini-usb port and the SD card. I have this cool USB device that has a mini on one end, and a standard on the other end. Transferring and using files between the tablet and my computer is a breeze! I had to get a wireless USB device to enable that on my iPad, and the fact that you have to be on its network makes it not as useful. I can also program for it using Xamarin in C# without having to jump through hoops to get the applications onto it.
So, I told my pros. My cons.
Battery Life. Not sure if this is just the battery in general, or some of the settings (I'm thinking it's battery life after a few experiments- I thought it might be gmail being open, but it syncs when I bring it to focus, so not sure that's the case). I leave my ipad for a week, and do nothing to it... and come back to it with the battery near full. Do the same with the android device, and it's dead. That's my use case for the device- I don't use my tablet everyday. So that's the major complaint I have.
Resolution and responsiveness on the screen. The screen is very high resolution and looks great. But what I've found is that unless I zoom in on a standard web page, I can't select elements. It's always off by a measure (up or down). Same resolution on the iPad, and it just works. Also, when I touch next to the edge of the screen (for instance to turn a page, or swipe) it seems to only recognize it sometimes. This isn't a particular app- it seems that all behave in the same way.
Fingerprints suck. I enabled it on my iDevice, and though it has its downsides, not having to put in my long password for some things is worth that. I can't get the bloody device to recognize my fingerprints, no matter how many times I set it up. It works... at times. But other times, even putting my finger fully over the sensor, it doesn't get it.
SD Cards. You have this great facility to add storage- and only some things are able to be put there. And there seems to be no rhyme or reason to what is able to be put there. I now only use my SD card for long term storage of items and content. It's 4 times larger than my internal memory, and I can't put my apps there and have to have them on my 32GB internal using space.
More Pros/Cons as I think of them.