Quotes from: part 3: http://www.dhv.de/web/fileadmin/user_up ... test_3.pdf
in Asymmetric collapse: "Mojo 4 and Koyot 2 change course to a greater degree and suffer more height loss than the
other test gliders."
In Front Collapse: "Ozones Mojo 4 opens first in the middle, but the ears stay closed with sink velocities of about 5 m/s for a period before recovering completely."
in spiral dive: "Relatively dynamic transition from entry to spiral, with rapid increase in sink rate and G-force. Exit relatively simple."
Buzz Z4 also had some qualities which I didn't want in for a safe/forgiving/well behaved first wing, however, if you are considering an EN B, I believe it is on par, if not better than most of the other B wings tested (although the Makalu got better marks all around, I think):
From part 6, spiral dive on Buzz Z4: "To exit, the glider required almost 100 height meters, as it remained in the spiral at -20m/s for a complete turn before slowing an pitching up."
There have been plenty of fatal accidents result from spiral dive, including several with the Gin Zulu which was one of the big reasons I was looking for a newer wing with more forgiving flight behavior in particular, in spirals.
Recommend you study the dhv safety reports carefully, but also, take them for what they're worth; not as absolute.
Also, when considering an EN A vs. EN B, consider the trade offs- what are you gaining with a "B" wing, vs. how much safety are you giving up? Flying around here is ACTIVE and often turbulent; therefore, collapses are more likely and expected. As a new pilot, you will be flying in the danger zone, closer to the ground more often. When you take a collapse close to the ground, you are going to want the most well behaved, easily self-recovering wing out there! my 2-cents...
P4; skywalk Chilli3S; Mesa, AZ of all places!
Get busy living!