For a reliable brand with easy spares etc I would go for Toshiba. John Lewis give a 2 Year Guarantee. There is one on the link at just within your budget.For about £30 you can get a TV dongle to use it as a TV and PVR! Do get a USB HD to back up data from the start!
Sony Xperia Z5 review: Hands-on with the phone which the Z3+ should have been