What have you used and what have you been pleased with? What do you watch the content on? (Comment on quality, compatibility, ease of use, portability, etc.). If you choose "other" or "other PC", please state which service - if it doesn't encriminate you... Also, please no "my format is better than your format". This is merely to help people think about how they want to purchase and view their content, especially with the very many competitive choices out there. Thanks!