If you're wearing diapers for want rather than for need, there's some reason, some attraction, that's motivating you. So you have to look at that to decide what would be a good change for you. MY personal preferences involve a desire to be wearing a diaper, and also I want those diapers to match my mental image of "what a diaper IS". That's why we see discussions here about people's diaper preference and it often coming around to "what diapers did you wear when you were young?" because that's the mental picture people will have in their head and that's the image they're trying to match up with.
I have almost no memory of my time wearing diapers as a child, but I have vivid memories of being around diapered children when I was growing up. So all white plastic disposable tabbed diapers are the iconic image that comes to mind when I think about diapers. And I'm pretty certain that's why I prefer them.
I personally don't care much for pullups. I don't like the fit, I don't like the look, and I don't like the performance. I want to be able to snug up and tape on my diaper like I know it should work, and walk over to a mirror and turn around slowly and look at my diaper, to be able to see how it fits and matches all my memories of seeing diapers being worn by others years ago when I would look at them and say "gosh I wish that were me wearing a diaper right now!" I love seeing the side profile of the front where it curves around and bulges outward with short folding creases around the edges, seeing how it fits in the back curving under my butt cheeks, with that same smooth plastic curving around and the little creases around the curves, and the elastic hugging my leg. Everything about that just screams "You've done it, you're wearing diapers now!"
So I'd suggest you do whatever you need to in order to get that feeling or mental affirmation you enjoy. If pullups are what screams "diaper!" your head, go with it. But a pullup just "doesn't do it" for me. Not having those tapes "securing" (trapping? forcing?) me in my diaper, missing that smooth plastic shell that adds the tactile confirmation that "yep, you're wearing a diaper!", knowing that the capacity is so much lower, it all just works against my image of a diaper.
On the other hand, you may be more fortunate than me because pullups are cheaper, more available, and often more convenient to use. So if you like 'em, there's no reason to change. (though I would always recommend to experiment with variations to see what you like, because you never know when you might find something that you never knew you loved)