I own both guys, there are a TON of differences.
At least between my 04 LC and 05 LX, here they are:
Leather is softer on the LX, and on all surfaces that are rubber/plastic in the LC (doors/handles).
Headliner is suede in the LX and regular cloth in LC.
Rain sensing wiper in LX, not on LC. Rear wiper activates when put in reverse on LX if front wipers are on, LC does not.
Ambient lighting in LX not in LC.
Door handles are chrome and lit at night on the interior of the LX, not on LC.
Steering is variable rack in LX, regular in LC
Suspension is AHC (i know the later model LC's have this) in LX, can raise/lower and adjust ride plus load leveling, not in LC
Under vehicle lighting on LX, nothing on LC
LX has an audible beep for lock/unlock (unless mine is off and i don't know it), LC nothing
LX has auto dimmer exterior mirrors that also power fold, LC has neither
LX has in cabin filter for climate control, LC does not
LX can lower windows with the remote, LC cannot
I'm not an audiophile, so I don't really care. But the LX ML is superior to the LC JBL stereo.
That's all I can think of right now, but I think there might be more.
Now, those 13 things may not matter to anyone and if not that's cool. I just never knew how different they really were until I owned both. I have both window stickers...the LC was 60k and the LX was 66k. 10% more for all of the above seems like a bargain for me.
The difference in looks is subjective. I do prefer the look of the LC, but I wish a lot of the LX stuff was on the LC.