The numbers look very good on the first stone. Do you have magnified images of the stone? Idealscope images? I would not buy a diamond blind, and especially one this expensive.
The GIA report number is incorrect. A .30 stone came up.
Very similar numbers to a diamond I purchased not too long ago. The one mark against them is the weight hidden in the slighly thick girdle all the way around the diamond. Your eyes likely won't see the difference anyway, so as long as knowing it doesnt bother you, I say go for it.
You would need more information to make an informed decision about either stone.
Good thing is that BN has a great return policy, so you can order both stones and either have them appraised or do an Idealscope assessment yourself.
Unfortunately, we can't tell you much about the performance from the GIA certs alone. All anyone can say is that these stones have the possibility to be great performers!