I do have Flemish strings for both bows, I think both from Danny Miller. They are nice but I have a JBK endless loop for my Micro355 made from Brownell Rhino material that is very noticably quieter, smoother and faster than the Flemish string. Wyvern is selling them but I spoke with Jeff from JBK and he said the material is no longer available so not sure what there is out there today.
I shoot the Flemish strings for targets but switched back to ELs for hunting season just to max out the speed with my heavy arrows. Probably makes all of 3 or 4 fps difference and we know how important that is. Lol
I'm headed out for a walk, temp is up to -14 F up here but it's a dry cold... and sunny.