It IS all personal preference= you can now customize your phone to exactly the way you want it(as you are now rooted).
I great place to stat is here:
http://androidforums.com/esteem-all-things-root/460450-lg-esteem-all-things-root-guide.html
Gives some explanations on the terminology, lists available ROMS,Themes,Kernels(well most of them
).
As you are running
ZVC the majority of the choices in there are available to you.
The best one to start with would be
http://androidforums.com/esteem-all-things-root/460445-list-apps-safe-remove.html
as bloat(is the #1 killer of your battery).