From your other threads, I am assuming you have a very young child and will probably have more. Because of that, I'd recommend your home resort to be Grand pacific palisades or Carlsbad Inn. I love Seapointe, but you hear the train there and it sounds like you'd prefer a less noisy resort. Carlsbad Inn also hears the train, but it's on a city street, so the normal hustle and bustle of the street drown it out.
Palisades has everything any family could need, but it isn't on the beach. They do have a shuttle that will take you within 4 miles of the resort, but I am not sure how good the nearest beach is. It is probably the most family friendly of all the southern California GPR with lots of activities on site and nearby. The pool areas are very clean and nice.
Carlsbad Inn would be very nice for walking down to the beach and they have beach items you can check out. It's on a busy street that is full of places to eat and things to do. A nice feature about this resort is that you don't really need a car unless you want to leave downtown Carlsbad. The pool here is small and whenever I've seen it, it has kids jumping around in it. It has a really nice large lawn in the center, which can be relaxing and relatively safe for a youngster to toddle around.
If you are set on being a member of HGVC, you'd have to buy GPP, Seapointe or Marbrisa. From your other posts, I don't think you'd be much of a Marbrisa fan, but it the only genuine Hilton of the whole bunch and still allows you to access GPX.
I haven't stayed at San Clemente and that might be worth considering, but my guess is that place left a bad taste in your mouth and you might get annoyed whenever you think about staying there.