It's a pretty decent stick assuming you're not paying the over inflated prices that Street Fighter IV fever has caused.
I was lucky enough to get one (a Virtua Figter 5 one) just prior to Soul Calibur IVs release and paid about 30 whole english pounds for it on Amazon. It's been good so far, certainly more than good enough for my feeble skills, although in my case the headset is more noisy via this compared to the stardard 360 controller. I like it - it reminds me of the Dreamcast one.
My main complaint is that there could do with being more space to rest your wrists at the front end of the base. The DC's arcade stick's buttons were placed further back which I think was more comfortable.