Astropad has a 7 day tryout. So, I've been using it to pretty great results. I like it.

With Wifi it's actually laggy, but with the USB cable, it has been very fast. Pressure sensitivity isn't that important to me - depends on your use-case.

Tried it with Photoshop and Illustrator and it works great. Being able to see what you draw is great, far better then a normal Wacom Tablet.

So far, it's a great option. A bit on the expensive side, but cheaper then having to buy a Cintiq or a Surface :)