Do these "ridges" or "ribs" make a difference ?

I don't know why, but at various times of the year different things seem to creep up on my radar, and at the moment I have got soft plastic shads/paddletails on the brain. Now it's not as if these kinds of lures are anything new in saltwater fishing, but the ways in which they are increasingly used are changing. Look around and you almost can't believe the array of shad or paddletail-type lures out there, but it strikes me that more recently we are starting to see an increase in the numbers of "shads with ridges or ribs" in the shops and the online stores here in the UK. I really like the look of some of these kinds of paddletails, but does anybody know if the addition of "ridges or ribs" can make a difference ? Logic says to me that the more movement and/or vibrations coming from a lure has to help at times, but does anybody here have some proper experience of using these things ?

Take the more "regular" paddletail/shad like Delalande GT Shad (bottom) and then the slightly different Delalande Buster Shad (top) - mates of mine swear by the GT Shad for example, and one thing I really like about it is how tough it is for repeated casting. There are a few other kinds of shads I like that just don't take a lot of casting before they tear up - ok, I might not be using them as they were properly intended, so please note I am not complaining about them. Just commenting. But the GT Shad is tough as old boots, and it catches fish. The Buster Shad seems to be made from the same kind of material. So if these are what we might call more "regular" shads....................

............then what do I call these things here ? They are still paddletails or shads in my opinion, but they have all these extra ridges or ribs on them. I really like the look of the Reins soft plastics, and these ones here are the 3'' Bubbling Shad (top) and the 4'' Bubbling Shad (bottom). I have not been out playing with them yet, but I know that some anglers are really starting to rave about the Reins stuff. Yes, those extra ridges do appeal to me, and they must in some situations have some serious "eat me" appeal to the fish. My understanding is that a bunch of little air bubbles can get trapped in those ridges and then be released as you fish the lure, or is that just me and wishful thinking ?

Another kind of "ridged" paddletail I have come across recently is the awesome looking Keitech Swing Impact Fat 4.8'' that you can see here. Again, they just really appeal to me the angler, but do any of you know more about where and when you might use these kinds of paddletails say over the more "regular" types ? Or is it simply a case of giving the stuff a go and seeing what happens ? I personally am going to carry various different ones with me this year, and then all I can do is to try them out in a range of situations and see what might work better where. Sometimes the amount I believe I need to learn and try to take on board about soft plastics especially (plus the hard stuff, make no mistake) kind of overwhelms me, but then I suppose that is a large part of why this whole lure fishing thing has got to me so much.