It boggles my mind why windows OEMs are sticking to 16:9.

Seriously it is like they dont even want to succeed. 16:9 is easily the worst screen ratio you can have on a tablet especially a 10" one which becomes downright too tall to handle comfortably. 16:10 offers the best balance and 4:3 has proven to be a success as well. But 16:9? Everyone complains about it and yet MS and its partners just keep doing the same thing over and over again.