Ask HN: 4K for PC Gaming & Productivity

You've likely all heard of the Seiki 4K TV. I'm looking for a new high end monitor for PC gaming and general productivity, considering NEC, Dell in the 30-inch range.

My question is, has anyone had experience with the Seiki 4K TV? My office is configured such that I could use the TV as a monitor and sit farther back. Would you recommend I go this route over, say, the NEC PA301W or Dell 3011?

I've never owned a 4K display before, or used a "TV" as a monitor, but the option to get 3840x2160 on the cheap is intriguing.

Thanks!