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!