So, I was in just this situation a few months ago, except I was looking for a 6 string.
Long story short... found an SRFF806 and an ABZ 6/3 hanging next to each other in the same shop.
I played the SRFF for about a minute before my left hand cramped up. The sound was OK I guess, but I've heard and played better SRs.
I shook it out, switched to the Dingwall, and played for about half an hour... but I'd fallen in love with the sound inside two notes. And I went back a couple of days later and bought it, despite it being twice the price and not intending to buy a bass on that trip.
There's something WRONG about the neck shape and fan on the SRFF, whereas Dingwalls seem to be perfect.
This is the one I bought, glorious bass:
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