Here's a list of all of the differences between the E6 and C6:
- The E6 series shares the elegant "Picture on Glass" design and the C6 and B6 has a very similar thin silver bezel that the EF9500 had.
- The E6 has a nice upgraded remote control.
- The E6 has forward facing 4 channel sound bar with a more powerful audio amplifier. The B6 and C6 have rear firing speakers.
- As you stated the C6 is gently curved and the E6 is flat, both can be wall mounted.