Hello CamC
As per my understanding, Paraliminals are very flexible, in the sense that you can do anything with your thoughts while listening to them. As it has been said many times on this forum, that you can either concentrate on the voice in your left ear, or the voice in your right ear, or right in the middle or let your thoughts drift away. As per my definition of meditation, you are relaxed, calm, and have no anxiety. Your focus is inwards. You can definitely achieve the same effect while listening to Paraliminals. Further, while listening to Paraliminals you can concentrate on your breathing, which is already deep and relaxed by the time you are little ahead in your listening session.
You can also consider Sonic Access if you are primarily interested in meditation. Now, I haven't heard Sonic Access, so can't give you a well informed opinion on this. Maybe Alex or someone who has tried both Paraliminals and Sonic Access for meditation, is a better person to throw light on this "Sonic Access or Paraliminal for meditation.
I hope I have been of some help to you.
God bless you .
Kind regards
Vaibhav Sharma