No you are correct BAC 69s are way cooler than 70s .....Sorry Glenn your 70 is very nice too!
I've seen a few fastback 69 & 70s turn up for reasonable prices, but you have to be prepared for a bit of restoration or even a full paint job.
I picked up my second 69 for only $17,000 four years ago, with a straight body, negligible rust but it needs a paint job. I wasn't interested in a Mach 1 as you pay a premium for vinyl stripes and woodgrain, and I am building a Restomod. It all comes down to what you yourself want.