www.repraper.com (chinese translation of reprapper...).
Ordered 5kg of pla, 1kg of abs, got here (Upper Midwest, USA) in about 10 days, and worked out to about $12/lb ($26.50/kg) delivered. They ship via FedEx, shipping is about half the total cost.
No PB+ yet so it hasn't been tested, but several people over on cnczone's Hoss 3D printer thread have been ordering and using filament from this supplier, and find it prints well. I had a shipping problem (they shipped gold instead of green), and the supplier explained they'd read his product code GN as GD and offered to immediately ship the correct color. I told him to wait until my next order; the gold actually looks pretty nice, I was just ordering "a spectrum of colors", and I can't print it yet anyway.
Happy with his communication, the product looks good on the spool (kept sealed with the shipped desiccant but others have found that it's round and consistent diameter). We discussed raper vs rapper via email, he acknowledged the spelling mistake but says he has spent too much on marketing to change it, at least now. I did offer some corrections on his web site english that he fixed. All around a good ordering experience, so if Brook continues to postpone his Mexican Villa trip, doesn't go bankrupt, or quit in disgust after reading the KS comments I'll be ordering more.
Kirk