I'm a Swaro fan, love my El's, AV and Z3's but I wasn't really happy with the Z6 50mm. My Leica er5 also a 50mm and a Zeiss Victory HT I hunted with were both much better at very low light than the Z6 I had. But as someone already posted each person's vision is different and I would get another Z3 before I considered a Z6.