So this LZ A5 is the first I've ever heard of the LZ line, and all I can say is that these earphone engineers know how to tune the hell out of a hybrid! The space space space of the instruments. The clarity! The sub-bass! The full-bodiness of the sound!! The vocal details! All are sublime without even getting through the burn in process. Really, all of the filters sound good to fantastic (with red being my least favorite because it sounds like almost too much sub-bass to the point of being nearly bloaty in sound). I'm finding that the grey filters gives me the best balance in sound, but the black, blue (then red) aren't bad either. These are something that competes with earphones in the $300 to $600 range (if not better). They make my K3003K eat dust two times over (and I really those hybrid). And they're comfortable, but definitely tip roll. My DZ7 definitely competes, but even without burn in these LZs leave the DZ7 in the dust from a bass standpoint. I'm thinking hard, but this may be hybrid IEM I've heard. It even surpasses the Sony Z5 in clarity (and better sub-bass).
