Zundert 10 is one of the best tasting Trappist quadrupel beers today, I believe. It isnt too different from most other quads but still has a unique flavor. Having only had a few examples of both and certainly not any kind of expert taster, I would
describe the Zundert 10 as something in between Westvleteren 12 and Zundert 8; very rich and sweet like the Westvleteren but with a hint of the unique Zundert flavor. It is definitely worth the cost to get shipped to the US since it is not available here, at least in my region. Less