Here's a nice review of the LC9 and a size comparison with the SR9C and LCP.
http://www.gunblast.com/Ruger-LC9.htm
I have shot both. IMO, the SR9c has a better trigger and easier to shoot. Accuracy is about the same at 7 yards but go farther out and the SR9c due to the reason above gets better groups. The extended mag is also nice at the range.
However, since I was looking for a lighter and smaller carry pistol in 9mm, I picked the LC9 for my CCW.
I guess it depends on what you want it for.
BTW, that long LC9 trigger is pretty smooth.