So I'm hopefully about to graduate with a PhD in molecular biology and am switching to pharm school in the fall. I know several professors in the pharmacology field (in fact, with my program, I could have ended up in a pharmacology lab).
I don't think being a PharmD or having a PhD in pharmacology can be compared across the line as better or not. It really depends on your personality and what you want to do. I'm switching fields to pharmacy because I don't really enjoy doing research. I'm glad someone wants to do it, but I don't. I'd rather work with people, learn drug mechanisms, and not do the same experiment over and over just to realize that your project is not working. Or, in the best case scenario, get one figure for a paper after several months of work. However, my husband just graduated with his PhD and is looking forward to a life of research. He also gets excited about his PCR results and checks them at home at night as soon as possible.
So I'd shadow/interview both and figure out what you want to do. Pharmacy may pay a bit more, but money isn't everything. If you hate what you do, that will make lots of the rest of your life miserable, too.