Yes, PI is Pearl Izumi. No particular recommendations. I usually have 4-5 sets of bibs on rotation and they usually last a few years so what I have is always superseded when I go back. I don’t have particular brand loyalty, I just scour Euro sites for good deals as they’re selling out season stock when we are in season. I aim for good deals in the $AU100-150 range which generally gets me mid to high end stuff. Also worth noting that PI has stayed consistent in sizing through the years while most other brands have varied due to me generally taking a long time to re-purchase.
Campagnolo were hands down the best bibs I ever had, but I only found them right before they stopped making clothing. Kit I’ve had good experience with PI, Sugoi, De Marchi, Endura, Shimano, Assos. I still have some Castelli gear that was nice but they’ve gotten much less nice a fit for the bigger rider
My friend’s club kit is Champ Sys and I know he didn’t like them much, but the roadies had the power to choose and like them.