I haven't heard the BC8 but I own the BC2 monos. They're great, and can be had for very little money on the used market ($2k-$3k). If I could, I would demo the BC2 against the BC8, just in case the BC2 is good enough for you. Also, just to mention, Gilbert has an upgrade option from BC2 to about 80% of the BC8 performance. That may be another way to go - get a used pair of BC2 and then upgrade later on when you feel like it. Good luck.
