I have had a chance to use both.
B-Mobile is far easier to carry ~ offers slightly more options and will last longer than P Boy. IMO!
I like the fold up fan holder I got with B mobile. I inserted real tail feathers and with a little bit of care it has lasted now for 4 yrs. The tail folds up and you can insert into the body of BMobile to protect it and carry the decoy.
I did insert a real fan in the P Boy slot. It works fine. I even used a B-Mobile fold up fan in P Boy ~ Worked fine too. However the fan slot left in the body of P-Boy is starting to wear. I see a crack along his body I will need to fix.that. And P Boy is much larger than B-Mobile so a bit more difficult to carry in.
P-Boy used plastic stakes which are hard to insert in hard ground. B-Mobile has a metal stake and is much easily inserted in hard ground.
I didn't care for the color of the PBoy head so I touched it up a bit.
I did add nail polish to the eyes of both.
P Boy does come with a hen, B-Mobile does not. However the ground stake to stabilize the hen was a wooden dowel that did not last long at all. I now use a heavy guage wire instead.
But I like using B mobile with 2 bobble head hens and one old full sized hard shell hen decoy as my laying hen slightly in front of B-Mobile and on an angle. Pay attention to how you see birds interact with each other in a normal setting and mimic that.
This set-up I used in Upper Mich - ` 15 minutes later I had the Boss hen with 2 other hens come marching in with Mr Tom. The decoys are no more than 4 to 8 steps (paces) from the front of me.

JW