I don't know what your getting at here. You obviously have your favorite brands and idea of the perfect setup. I went for something that will work for my needs and budget. A simple voltage booster to be able to charge the battery at 14.4 instead of 13.9 while driving is good enough for me. I paid $10, how much do all your charging devices cost?
Back to the X2, sure B+ is Northstars customer. However, dictating their own specs to slightly different than what Northstar already manufacturers usually wouldn't save much money. Usually cheaper to manufacturer the same product and stick a different label on it at the end. Have you looked at the specs anyways? Exact same CCA and reserve capacity, weights are listed at a 1 lb difference, and a .01" difference in height. Same specs, same production facility, different label, different retailer.
I saved 20% plus a year extra warranty over the Northstar branded version, plus have local stores if I ever need to use the warranty. To me that was a no brainer.
Sorry, but your personal opinions that are working out great for you are not going to be the best for everyone.