I can comment on the PhD in pharmaceutical sciences. It's what I did after my PharmD. It's nice becasue you get a meager stipend (~25K) and your tuition waived, but I'm also working part-time as a retail pharmacist. I started doing basic research during my last couple semester of Pharm school and really enjoyed it. It's nice becasue while there is pressure to get work done and work hard, you can be very flexible in your schedule. Sometimes it's beyond frustrating and sometimes is super rewarding. I'm about 1/2 way done with it and I'm glad I did it. In the end I'm thinking about teaching which would be the best of everything, you get to do science, teach and practice. Plus the areas you can work on are endless if you can find a faculty member to work with. I'm doing cardiovascular pharmacology with lots of bench work, but some friends are doing tons of modeling with little bench work and on ever topic you could think of.
Some people are going to point out rare cases about PharmDs doing bench research but if you notice, they are very established and started doing it when the PharmD was a rarity or started in niche topics that really developed. You really need a PhD to get into it.
If you have any other specifics feel free to ask.