I'm blown away by how good technical books look on Google Play Books on the Nexus 7 (and maybe all tablets?). I normally use a 2nd generation Kindle and can never read tech books on there because of the code wrapping lines and the monochrome text. But the difference between a tech book on the Kindle app and the Google Play Books app (both on the Nexus 7) is night and day. I highly recommend at least getting a sample of a book and trying it.

You can also zoom out far more than you can on Kindle, which probably helps it look so great.