Yes, I quite like the '78-'79 BS38s. They run nice at low speeds and idle, better than the earlier sets. I think this is due to the spring-loaded needle set-up they got. It holds the needle in position more precisely. On the older slides where the needle is held in with that large plastic disc, if you hold that down with a finger then grasp the needle, you'll find it has about 1/2mm of up and down "slop". Since the needle clip positions change it's height by 1mm, this means the needle can bounce up and down through half a clip setting, not a very precise set-up to say the least. At higher speeds and RPMs this probably isn't very noticeable, but at low speeds I think it is.