E-readers and/or Tablets for Displaying Scores: Recommendations?

[starlady]

There's a lot of traveling lined up for me in the next few years.  Traveling with piles of paper scores is killing me, and living without my music would kill me faster, so I'm looking for an e-reader that will display .pdf files and that is big enough to read as it sits on the music shelf.  So far I've proven that my Kindle paperwhite does not do the job. 

So what do you all use, and what do you recommend?  The big Kindle? A tablet?  Which tablet?  I don't have a tablet, and I predict that if I do get one this score display would be its main purpose,  so hearing your experiences would be a big help!

thanks, s.