Well, if you want a lot, there's:
http://www.amazon.com/VINTAGE-YEARS-B-B-KING/dp/B00005QX62/ref=sr_1_7?s=music&ie=UTF8&qid=1431862887&sr=1-7&keywords=b.b.+king+ace
Personally, I'd opt for one or two single CDs.
This is a very good one:
http://www.amazon.com/Do-Boogie-B-B-King/dp/B000026ANG/ref=sr_1_10?s=music&ie=UTF8&qid=1431862887&sr=1-10&keywords=b.b.+king+ace
As is this one:
http://ecx.images-amazon.com/images/I/51J32ue9LhL._SY355_.jpg
Ace has reissued B.B.'s recordings many times in various collections, so you have to check closely to see that you're not duplicating what you already have.
Good listening, Tom.