I think a hyper pro works reasonably well for deep diving as well. At least I could not feel any significant change in the properties in numerous deep dives (50+). Of course when you're aiming for 100+ things are different
Naturally it's pretty good for dyn too, but you need to decide which is more imporant? Anyway, as a compromise (you do a bit of both but not WR level in either) it works really well IMO. But I can tell you this that I was REALLY concerned about the buoyancy change (neurotic even), but now I don't consider it much of an issue (although my fin is also slightly less buoyant than a standard hyper)
But anyway, I thing a soft or medium hyper is a fairly good choice. One "trick" you could try (at your own risk!) is to as them to make the foot pocket a bit wider than standard. So for example if you foot size is 44. As for 44 in length an 46 in width. At least for me that works really well - it is the first fin I'm able to wear practically for ever but it still functions really well (can fit 3mm socks in there reasonably well too).
A soft fin might feel like you're overpowering it at first, but most likely the problem is in your technique or weighing...(I had absolutely no problems getting up with a soft blade and 90kg of body mass)
