I've used CuteClips for I-dunno-how-long (2-3 years). I tried a few other multi-clipboards and CC is best for me. Simple, intuitive interface, regular updates. Especially useful to me is the option of pasting formatted text as plain text. My only nit had been that it was occasionally s-l-o-w to scroll when you brought up the "chooser" interface. Haven't had that problem lately so I assume it's been fixed.