I think the fit varies across the range quite a bit. The fit of my Alta 2, Velez and Pasco jackets are very different, the Ostro is very different altogether.
Comparing my Alta 2 with other jackets I’ve owned in the same size, namely the Montane eVent evolution, Berghaus Goretex Peak and a Rab goretex that I sent back after the first use. The Alta has far better articulation in the arms, hood/neck and greater back/arse coverage.
For me personally I find Paramo far easier to regulate my temperature and overall ventilation than any other jacket type, eVent comes close but IME eVent seams do not last and the fabric itself is prone to delamination in high pressure areas.
Although I’ve had my Paramo Jackets wet out in places during heavy rainfall, M wind driven rain ect I’ve always remained warm in Paramo. When I’ve had Goretex wet out, I found it spread quickly and my temperature drop rapidly.
I’ve given up on Goretex and other laminates, investing in Paramo over the years and it works for me personally. I know people who find the complete opposite though. We are all different and what works for one, won’t for another