Hi Dave,
I stay away from sampled (sampler) stuff, I suppose, and I always associate Kontact with samples. It's just a creative decision I made a long time ago. If I do use samples, it has to be something that I have sampled. And to get Kontact now, for something like Hypernova, is not cheap. So I keep giving it a miss.
The nearest I have to a sampler is Absynth, but it is the only synth that I use than can play samples. Except I don't use the presets that do. And I use Absynth less and less now that I've got excellent synths like Hive and the Arturia V series stuff.
I've got an unloved Yamaha A3000 gathering dust somewhere...
Having said that, I have very recently embarked upon a couple of sample mangling projects, but I consider this to be different from sample library stuff

.
Silly in a way, because when I hear some of the stuff that peeps create with vocal sample libraries, I think they sound great...
cheers
andy