Both are too big, but the Ultron will fit in a standard eveready case. The Ultron has poor ergonomics. Performance wise the Zeiss is 200% better. It's a no brainer. The Biogon is the best if size is not an issue. I have both. The Zeiss' color (blueish) took a while to get used to, but its old timey tonality and lower contrast is drop dead gorgeous. It's flattering to ugly women and babies. My Ultron is an orphan and is the target of my verbal abuse on this forum. I keep it around just to kick it. Please somebody, buy it from me to save me from myself! I know there are plenty of crazy misguided CV worshippers in this forum!