I just called AOA. They told me both guns are available in .22 caliber only. The stocks on both models are identical. They do not come with a thumbhole. The energy ratings are identified correctly on their website. The salesman told me they are waiting on new updated pics from Brocock to reflect the stocks being the same on both guns.
I would think the higher priced gun would have a higher energy rating, but such is not the case. Just my luck.
BTW, LDM, I didn't mean to hijack your thread. I really like the looks of your gun. In fact, I am probably gonna order one just like it. Good review too.