Hi,
OOPS ALV is preferred because of easier maintainability.
Tonnes of sample is present, few are -
http://wiki.sdn.sap.com/wiki/display/Snippets/sample+ALV-OOPS+program
http://wiki.sdn.sap.com/wiki/display/Snippets/ABAP-7+Steps+to+create+OOPS+ALV(for+beginners)
and one forum Q
http://scn.sap.com/thread/873601
BR.