Looking for a Windows 8 tablet?

I want to get a windows 8 tablet that fits the following requirements:
- Not too expensive; under $500 if possible, under $700 at the most
- Can do everything a regular laptop can; USB devices, multimedia, etc.
- Fairly powerful; can easily do many tasks you would do on a regular PC, including Minecraft-level gaming and PowerPoint presentations
- Has a compatible keyboard… I don't want anything that I would have to find my own keyboard for
- Much better in every way compared to those 'Acer Aspire One' laptops… I've had bad memories from those, and I'm not looking for getting the same experience again

If you know, have or recommend a Windows 8 laptop/tablet hybrid that follows all of these requirements, tell me and thanks.

For 300 bucks you can get the Asus transformer book t100 its not the best device in the world but it does the Jon. It is a tablet that comes with a dock an is 10.1 inches it may not be what you are looking for but its a good device.