I'm having a blast with my 8-stringers.
I had reservations about tying up any money in one, figuring that it was a niche instrument and all... I tested the water years ago with an '80 Ibanez - my first 8er... then picked up a 4003s/8 last year... and now I'm scrambling to find funds for a gorgeous BCR Bich Supreme 8 string that I have a shot at. So if it works out, I'll have one in short, medium and (almost) long scale
Never had an opportunity to try one, but I also GAS for a B12S...
They're not for every situation, but I've found them to be a lot of fun in their own right. I play them quite a bit at home, especially when its just me and my son (bass and drums), and I've been gigging the Ric with the band from time to time.
Cheers and good luck with the NR sale!