How do you feel about the volume of the paragon? I've heard from some its relatively quiet and that causes a problem. I play in a... ahem... quite loud band, and if this isn't going to cut through then I should reconsider. Why did you like the HHX better?
patrick
doctor!doctor!
The volume of the crash would definitely be enough for a rock band, but is still sensitive at moderate volumes. I've never played in a loud band before, so I can't say for sure. I'd recommend trying it in person for that. My guess is that would cut fine.
I liked the HHX because it seemed a little more versatile to me, which was important since I don't have a set genre. The bell seemed more complex and seemed to have nicer overtones to my ear. It had some more wash, and a darker sound, which I happened to prefer. I would highly recommend listening to both cymbals in person so you can hear the subtleties.