Randy has explained the price increases in great detail. The factories are charging much more (and have been but he's been taking less profit for awhile) and overhead is costing much more. He has to increase the price like any normal business would.
Now, I understand if you see a SS statue and the price isn't much different that it might be confusing. However, SS has many more licenses and can make better deals withe factories,etc. Also, some SS costs much more than expected and thats probably quotes to get the statues done too.
All in all, buy what you like, mix and match. Its what I do. Some pieces that I want comic accurate, I'll buy from BD. Some other pieces that I don't mind the artistic interpration I'll get from SS.
As far as poses, BD tries to make statues that are easier to display and that will display well with teams and other statues. I like simpler poses. Some of those poses to me show the character better than a dynamic pose. A couple of pieces from SS I think are great sculpts but I don't like the pose. Its all just how you like your statue design and how you will display them. No right or wrong answer that applies to everyone