Lenovo Yoga 2 Pro. A little expensive but bazingly fast. I purchased the Core i7 version wih 8 gig RAM abd 256 gig SSD. From button push to login is about 7 seconds. I run everything on from Microsoft Access and SQL server to Adobe Creative Suite 5.
I bootcamped my MacBook Air so I can run Win 7 on it. I like the Apple hardware, lightweight and fast, but mostly run Windows programs.
For a tablet I like my iPad mini.
All the rest of my laptops are Lenovo Win 7s. My job requires a lot of portable devices.
Hate the keyboard on the MS tablets so would rather separate out the devices so I have a good keyboard when I want it and a lightweight fast device, iPad mini, to carry for email, web searches and reading Kindle books
I had a Blackberry Playbook for a while, but it went bad in a year. Amazon never created a kindle app for it so that was frustrating.
Most people can get by with just a device or two, but my job is sort of techie so lots of options are required.
I do wish that Apple would let me bootcamp the ipad so that I could have Windows functions on it as well.