I find the texture to be a definite benefit in design. Makes hand tightening installation a breeze, and I like it. I've seen no documented evidence that the Bosch premium can is thicker. That said, the significance of any minor difference would be negligible in standard passenger vehicle applications.
Most of these overspray issue still showing up now seem to be from older inventory sold through Amazon, haven't encountered it in purchases from AAP. Likely it's AAP's newer inventory, and as with any filter the added benefit of opening the box prior to purchase.
But for
But if one prefers Bosch Premium it's the same filter as the P1, still made by Purolator in the same place. I've just not seen it for the same price as the P1 sells for at Amazon or Kmart.