After all the suggestions & recommendations are all in. The next thing to do would be to listen to most of them with your favourite cd's and head to the authorized dealer.
Nothing beats an actual in store demo.
good luck.. lots of great choices out there.
I would also like to add, its probably best to get a speaker that is a good all-arounder rather than a specific speaker for rock / jazz.
Our personal taste in music could evolve over a period of time.
All the best!
