Prostate massager or something bigger?

I've dabbled in anal play (M) for a long time. I got a Vice 2 prostate massager a bit back and it's nice, I feel spasms, nothing "dopamine level" and I always feel like I need 3x bigger & 4x more stimulation. Any feedback on this? I appreciate it. Part time player for sure, but when I'm on, I'm looking for more.