You rang! <smile>
My Acer Windows 7 pro tablet has 2 GB of RAM and 32 GB of drive storage. It is my main computer. When I have to replace it, I will replace it with another tablet.
If I had a choice, I would take the 4 GB RAM. More RAM is always better even if it costs more.
As with buying any computer, buy the best tablet you can afford with the highest drive storage, highest RAM, fastest processor,, etc.. Check out reviews for different tablets on the Internet
A 10.1 inch screen would be the smallest I would go.
A SD card or Mini SD card and at least 1 USB port is a must. More than one USB port is better. And, the larger the SD card permitted the better.
I have a 128 GB high speed SD card which lives in my Acer. A tablet with only a 32 GB drive storage that will only allow a maximum of 32 GB SD card would not be my choice.
I also recommend you get a good case to protect the tablet even though that will add a little bulk and some weight.
My Acer is a dinosaur compared to the newer tablets as I bought it just when the first Windows 8.0 tablets were just beginning to hit the market.
RootsMagic runs fine on my tablet. I use it every day. And for most RM functions, the tablet is fast enough.
I don't run any reports for everyone. I haven't tried a large Publisher book on the tablet. Anything that is going to take time to process will, of course, take longer than on a more powerful computer.
I have my main database saved to the tablet and my media files, backups and gedcom and other data files are saved on the SD card. Everything is also backed up to other mobile storage media in case the SD card fails.
I also have some portable apps from Portable Apps saved to the SD card and run them from the card.
I usually just use touch, but I do have a third party USB touch pad. I also have a detachable keyboard that I seldom use. I have a USB 4x6 keyboard I bought a long time ago that I use if I want a keyboard, and it is lighter to carry around.