The chinese are comeing out with some decent tablets now Pipo ,Ainol ,onda .Make sure u go for an A9 dual/quad core cpu/gpu or higher ,dont bother with A8 single core devices ,they are not worth bothering with now .Also IPS ,Capacative screen with high resolution .Some cheap tablets are only 800/600 ,even on 7 inch screen things look big
Like a previous poster has said though theres a lot of rubbish out there . For £100 u can get chinese dual core ones now .Up your budget and u can get more .That new HP slate 7 looks a nice one for £130 and u have a well known branded product with no built in chinese apps and proper support as well as uk power adaptor .You need to watch with chinese stuff about support and warranty etc
As long as it dual core ips capacative ideally with jellybean ,some are still on ICS they are all more or less the same .Thers even seconhand nexus 7s to look at .You must be able to get 16 gig version new now for £150 ,as good as they are theres no HDMI out or card slot if that matters ,things u get on cheaper chinese stuff ,even though they are more powerfull with Tegra 3 cpu
You propably only need the power of nexus 7 to play games on anyway
The trouble withn the kindle fire from what iv seen is its not true Android it has a heavy skin over it ,as well as basicly being a marketing tool for amazon.Its all about buying the tablet only to purchase more stuff in the way of music/book/apps etc from the amazon store.Incidently the findle fire is probably made in china
Mark