I have a CS24 Krakatoa. No complaints. It's an upgrade from everything I've had before programmable, and it's on par with the WT's for quality.
I like the CS24 toa speaker calls. I've been recommending the hellfire for cougar calling. They're tougher and still produce good sound at volume.
I haven't hunted over a shockwave, so I can't speak definitively, but the features and gee-gahs make it so complicated, and it's like carrying a boom box.