There isn't much of a selection on 4K monitors right now so going for a temporary cheap and cheerful option might not be a bad idea especially if it's just for console gaming. If you then want to invest in something better in the future, you can do that when something decent comes along and manufacturers ranges improve. If you want a more recognised brand then this is probably a decent alternative for a little bit more
Buy SAMSUNG LU28E590DS 4K Ultra HD 28" LED Monitor | Free Delivery | Currys
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4K Ultra HD 3840 x 2160p; Response time: 1 ms; Input: HDMI / DisplayPort; Can be wall mounted