I think that we have to keep in mind what the BT is designed to do. That is, expand quickly, and possibly fragment, and deliver quick, clean kills on shots behind the shoulder or therabouts on deer/antelope sized game. It is not meant for "Texas lung shots" or raking shots. They are not a great choice for elk and such. They shoot accurately in most rifles, and kill quickly when the right shots are taken. Also, they probably arent the best choice when you push them too fast, like I tried in my .300 WSM. They work great on longer shots, but are very destructive on edible meat at close range.
For my money, I like the Nosler Accu-Bond better. They hold more weight, and are, in my opinion, a more accurate Nosler Partition. I killed four whitetails with the 165 handloaded Accu-Bond last year from thirty to four hundred laser ranged yards. All were bang-flops.
In conventional calibers and velocity, the BT is all you need in deer sized game. I will hedge my bet with Accu-Bonds this season, though.