I’ve not had experience with the Sony, have always been a Pioneer man.
The Pioneer offerings are much the same sort of design, the AVH-Z3100DAB I have has controls on the left, which are a bit of a reach
Where the AVH-Z5100DAB has a slightly larger screen and has the on the bottom. This unit also has Android Auto support which the lower end model doesn’t have.
Both those units support DAB+ which is nice to have in theory, but for us the reception can be spotty so we are usually on FM (that’s not true, mostly we are on streaming music, but you get the point).
The slighly cheaper AVH-Z2150BT and AVH-Z5150BT are the same units without DAB+
If I had my time over I would get the larger screen with controls at the bottom since it’s much easier to reach them rather than across the other side. I’d also probably get the cheaper non DAB version too.
tl;dr Get the one with control on the bottom, over the other side is a bit of a pain.