As GtE has said, for you the hours with an instructor are either PIC if instructor is merely a passenger and not instructing in any way or Dual (/ P/ut), if the instructor is providing instruction in any way shape or form.
SPIC is only to be logged by students under an approved integrated course.
The other function which you may encounter (you should have already for your PPL skills test) is PICUS, which can be logged only under 2 circumstances. The first one which will apply to you is if you successfully complete a skills test/reval/renewal with an examiner (if you fail it back to Dual or P/ut). The second is under an operator approved scheme normally for the purpose of upgrading.
In short: You should not be logging SPIC! All your flying for CPL and ME/IR should be dual or p/ut until you pass a skills test, for which the test flight can be logged as PICUS!