Which one to pick?

Been an penguin classic (first image)reader but there are loots of other version and diffrent publishers.( I know the basic diff need personal reviews) Out side is cool and all but i want to know inside quality like page, fonts and other changes. Amazone review seems less and less reliable since there is review loophole..so if anyone has used other versions(need not has to be this or one of same kind) can you comment your experience b/w anyother version and publishers.