Unlike a lot of people, I prefer the rear, not the very back, just 4 or 5 rows behind the wing is perfect and I like to be alinged with one window, not have the space between where you have a window to look in-front and another to look behind.
Sitting in-front of the engine, you get a loud, almost buzzing sound and really hear to spool up on take off. Behind the wing, you get more of a rumble on take-off and reverse thrust on landing. Both are good but that roar and fast acceleration that pushes you back into your seat when take-off throttle is applied is the best part of the whole flight hence why I always sit towards the back, plus it seems quiter in-flight I find!