Looking for a family all in one desktop PC. What make, specs shld i look out for? Budget is �500. Have 3kids?

Not really a PC person but I want an easy to use desktop that also has DVD/RW etc powerful, lots of memory, lots of hard drive space, etc. I had the Advent one which was good but looking for something for myself and my primary school aged kids. I heard that Sony is good? Noi sure about that.