Well we have seen alot of tests of the HK3.0 and it seems like its a clear winner, but not here so I cannot think this is abit biased, but I dont think it would be as it would hurt reputation more than it would gain, allthough it dont seem like you used a backplate with the HK3.0 (Not sure how much this matters) and the KT350 is known for its solo capeabilities which is prolly why NaeKuh wants a test without GFX. But I must say I am tempted to get the GTZ just because of the mounting mechanism