I have had BW since late v. 6 and will be upgrading to 8 soon. I also have Logos Scholar's Library (not gold or silver, just "Scholar's"). There is some overlap, but there are also many differences, and frankly, too many to sort in one thread -- especially since BW8 is coming out. I know that the Early Church Fathers and the Greek/Hebrew grammars are not included in the Logos packages, but are in BW8. For logos, the "Church History Collection" is about $100 -- extra. BW, on the other hand, has introduced new features in v.8 that I don't know how would be done (or done with nearly the ease) in logos.
The best thing to do is go to
and figure out which pieces of the products are important to you, and then see which one justifies the price.
Of course, some advantages to BW is that it is so fast you'll have blisters on your fingers when you use it, and there is also this loving supportive community that you really can't put a price on
"Contend earnestly for the faith that was once for all delivered to the saints." Jude 3 (ESV)