Where and when will I be using my tablet
 

Where will you be taking this new android pad of yours? It probably doesn't matter much if all yo'll be doing is sitting at home. But, if you want to take it on your commute to work you really don't want to be carrying a heavy piece contraption around with you on public transport. Is it a discrete 7 inch android tablets? Will it fit comfortably into your handbag or coat pocket? Can you hold it for an extended period of time without your arms becoming tired?
Tablet's come in all sort of sizes, some may suit your way of life more than others do. Manufacturers seem to be hedging towards the android 2.3 tablets as a one-size-fits-all. Not too large that it doesn't fit into your purse, but not so small that you will not be able to clearly see the screen.
You'll also have to think about your ability to connect to the internet. Although onda android tablets usually come with Wi-Fi enabled, you may not always be in a wi-fi zone or "hot-spot". Luckily for us, most tablets come with 3G network options, but this does means prices vary between Wi-Fi and 3G versions. Plus, you could have to sign up to an annual contract with a 3G network provider. It's something else to consider if logging on to the internet at all times is important to you.