I'm not huge, but I'm not classic road cyclist build (5'8, 85kg) and I find Castelli's Endurance range to be very, very comfortable, if a bit expensive.
Usually buy DHB, but Wiggle are their main seller and stock hasn’t been great this year, unsurprisingly. I think DHB will start to stock other suppliers or they risk going under…..
I’d buy FLATB but being outside the UK, risk import duties now.