I upgraded from Poser Pro 2014 to Poser Pro 11 and I have no regrets. SuperFly is a game changer and Firefly is still there. To sum it up, you will have many more options with Poser Pro 11 than you currently do. I you are looking for realism then SuperFly is going to be the best choice.

I'm not into realism as much as some people are so I'm still learning how to work with Superfly to help me get the results that I like. Super fly = More Detail Anime = Less Detail. But with that said, I could easily switch back to FireFy if I need to.

This is using Superfly. (I think with no edits or very little editing)

This is also using Superfly, but edited. The non edited render is not far off from this. Most of my edits are just boosts in color saturation.

I took a look at your gallery to see what type of art you have created and it looks like Superfly is going to be a better option for you. If you are looking for realism out of Poser then it's basically the only option in terms of upgrading Poser.