We've got a Group Test of 3D 50in TVs - all but one of them plasma - coming up in our next issue, and several are available for under £1000.
That issue is on sale 30th June - in shops and to download as a digital edition. Subscriber copies will be posted out next Friday.
If you can't wait that long, then - on the back of strong performances so far this year - i'd take a look at Panasonic's 2011 plasmas. The 2D Panasonic TX-P50G30 can be had for under £1000; its 3D sibling - the Panasonic TX-P50GT30 is available for just over your budget.