As the subject says - anyone heard of this brand? Googling for the
brand doesn't return anything useful, so I'm wondering if the BBQ is a
rebranded version of something else....

Here's a link a description page for the BBQ:

http://www.barbecuesgalore.ca/BBQ/azuma.html

I'm waffling between this BBQ, and the Weber Platinum D4. The Brander
looks like more BBQ for less money (about $500 less than the D4, $600
is you take into account that the cover is not included with the D4),
but I'm concerned about the quality.