Dingwalls are great instruments, made with high attention to detail. They make around 300 basses a year, compared with Fender, who make god-only-knows how many.
However, it's all down to personal opinion, and ultimately, what you want out of your instrument.
Have a look here: Dingwall Owners Club Part 4
Those guys (particularly Grand Wazoo and Blues Cat) know WAY more than me about Dingwalls!