Best Tablet for Productivity?

I’m looking for a tablet that will help me be productive away from the office. I’m almost exclusively a Windows user, and have an Android phone, so I’m not looking all that closely at the Apple family. Does anyone have experience with the Galaxy Note 8, Nexus 7 or Lenovo Thinkpad Tablet 2? I like the first two for their size, but the latter seems very robust in terms of its Windows functionality. I would appreciate any recommendations you have (even if it’s to try to convince me that an iPad is the way to go). Thanks!

Good resource for technology recommendation is TheWirecutter.com. Here is their tablet section: http://thewirecutter.com/leaderboard/tablets/