I took the plunge for a descent and relatively inexpensive tablet. Want a 8" android, with a fast graphics SoC. Got a HP Slate PRO 8 with a Tegra4 was $220.
About the best your are gonna get unless you pay $300+ for a Tegra K1 device.
It lasted the total of 2 hrs of use after charging for several hrs.
Shipped it back for a refund.
Decided to wait till the K1 devices get more affordable.
Tegra is crap from my experience. For $200 (was ~$131 at Microcenter) the Galaxy Tab Pro 8.4" with Snapdragon 800 is a great option.
I lucked out on a new 14nm Broadwell fanless touch screen plus wacom pen windows tablet that is pretty awesome. Not quite as nice as Surface Pro 3 but at half the cost it's a no brainer and professional software availability is superior to Android and iOS.