I have 1 pair of 100 mm (Fortitia in black) and 1 pair in 120mm (Fetilo in Lavender). Other than that, everything I own is between 140mm-160mm. I dont think I would ever purchase under 140mm (unless I ever find piagalle or lucifer in my size!). Also NOT a fan of chunky heels.. Just not my thing. I feel the higher the heel the better! I'm 5'6 and hubby is 6'3, so even with my highest heel he is still taller, so it works out perfect!