I just got the 8 Pro after finally upgrading from my regular Pixel 4, and it's difficult to get used to the size difference. It isn't immense, but it's absolutely going to take some adjustment time. Fantastic phone otherwise, though.
Yeah, I went 5 > 7 Pro cause I have meat paws. Trying to do the damn delivery service stuff on a phone smaller than my hand was entirely too difficult.
The #a line is usually a bit smaller then the flagships. The 4a was the perfect size. 3a was huge compared to it. 6a is slightly larger than the 4a. The 6 is massive compared to the 6a