I'm not a velodrome guy. My fix gears all see only roads and dirt. I love those Izumi Eco chains. Simply very good chains that work. They do not run quietly over Eurasian cogs but I've come to associate drivetrain noise with chains that don't come off (and allow more slack). Now cranksets - I run both 144 BCD (Sugino75) and 110s. Roads have hills. At 67 years old, the hills I love to climb are no longer fun on a 42-24. That sweet Sugino75 will never go lower. (Unless I find a bigger than 24 tooth cog. I've never heard of it to this day. (Took years to hear of a 24 in England. Have yet to find a rare as hen's teeth 144 BCD 1/8" 41.)
With a 110, I can run a 36-24. Game changer. But - chain slack becomes an issue. 110s are (in general) nowhere near as round as that sweet 75. Doing on-the-road wheel flips, often when tired, means that sometimes I don't have the slack set perfectly. Here is where those Eurasian cogs, 1/8" (Mojo) chainrings and Izumi Eco chains rule. Chains stay on. Downhill going very fast over perhaps not smooth roads and tired legs. Bad things not happening? I can live with a lot of noise!