I like them; have one overhauled by a trusted technician and it works beautifully; I am not sure if the Kiev 60 is a nicer camera, having used both side-by-side. The prism finders make it somewhat top-heavy, and the waist-level finder nowhere as good as that of the Kiev (although Baier sells an adapter to mate the two together). But a well maintained one is very pleasant, and has extremely low vibration, quite suitable for hand-held work.
By the way, the "mushroom" strap lugs are positioned at the sides of the mirror housing so wearing it around your neck can be a little painful; the original strap is leather and the spring clips are somewhat easily distorted. Use the bottom half of the ERC instead, or get Op/Tech strap with the correct fitting.