That's true! The Regna 98 is awesome. I played my best with it when I left it in stock form. With a static strung weight in the mid 320s and a similar swingweight, it's great. I did not like it as much when I started trying to weight it up, however. For some reason, that just didn't work well for me. I think it's one of those sticks that's really meant to be played as it comes, and without much weight added on. Or, if you add weight, just add a bit and mostly at 12. Overall, however, I just play better with a lot more weight and a very HL balance.
I just checked out the stock specs on the Regna and the PSVS, and they are amazingly similar. But, I think the Regna is actually more like the PAVS, but with a much lower launch angle. The pattern is pretty tight, despite being 16X19, and you don't get much lift for free. When I was playing with it full time that was no problem, because you adjust, but trying to just pick it up and play here and there is a bit of a challenge now. But, you get some great pop on the ball, and can really crush shots. Really good on offense, but less effective on defense for me. The feel is hard to describe because it is not soft, but it's not harsh at all.
I moved on from the Regnas to the some Volkls (Almagro player stock) and those are amazing. Very nice frames. I would say they are a bit more muted than the PSVS, and slightly lower launch angle, but they take weight very well, and I love playing with them. I can swap back and forth between them and the PSVS without an issue. The 19mm beam on those is awesome, but the PSVS doesn't feel that much fatter.
The PSVS, to me, is about the best feeling racquet I've hit with in years. Just really amazing. It is also very versatile - good access to spin, but not over the top. Easy to keep the ball deep, but good touch. OHBH is awesome. Serving is outstanding. The Regna is actually really great on serve too - you can bomb serves with that thing, especially when it's in stock form.
I think I would go with the Regna if I wanted to keep it pretty light and also wanted that tight, controlled pattern and like to attack the ball whenever possible. It's well suited to the modern game, I'd say. I do feel like the PSVS is a bit easier to play with though, at least for me, and I prefer the feel.