My mother has a Hudl, she likes it but the volume of the speakers is too low for her to enjoy watching programmes and videos on it. I thought it might have been her hearing, but it is just that the maximum volume isn't very loud.
We use various sizes of Nexus devices here (Phone and tablets Nexus 7, three Nexus 10). They are good value, offer great performance, and the Android operating systems are updated quicker before other android devices. The Nexus 10 (a ten inch screen) has been replaced by the Nexus 9 (a nine inch screen), but you can still buy new Nexus 10 tablets on Amazon (they are sometimes described as "Samsung Google Nexus 10" too, they're the same model)
In practice, as long as you stick with a familiar android tablet brand, you're not going to get a bad one.
Trystan