Yes it's the same.
I bought mine here:
http://www.pc-mac2000.com/yy0221_and_yy0211.html
but it was 1y and half ago, i paid only 300€ with a 350W PSU.
Now i think you're better off buying it from low-noise and getting a seasonic or Q-tech PSU.
Anyway it's an excellent case.
The B0420 model is bigger, depends on your needs. Do you have a *lot* of CDROMs and HDDs ?