Wow, I lost count of how many Android based tablets I saw at Computex in Taipei this year.  Literally hundreds of models that are out, available, or coming out.  There are still only a few that you shouldseriously consider if you want the best Android experience though, and I will go over these here.

Hardware differences:

The latest tablets (running 3.x HoneyComb) from the top manufacturers all have very similar specs CPU hardware side and so will have very similar performance.  The differences you will see will be in screen size and quality, physical casing dimensions and materials, ports, built-in camera(s), and accessories.