Out of interest, how come you liked Acrobat much more than Manta @Serena; I thought they were clones of one another?
Sometimes it feels to me like coasters with the same layout can still ride kinda differently. In the same way that some SLCs and Boomerangs are more tolerable than others, despite being the same layout.
I also think timing had a lot to do with it. I rode Manta in 2012, and it gave me a massive headche. But since then, I feel like I've become more 'hardened' to ride forces, and found riding Acrobat last year was way more enjoyable. Tldr: I was expecting a headache from Acrobat and didn't get one, therefore I liked it much more haha.