The only Klipsch we have seen test reasonably well is the RP8000F, and that frankly had problems I would not look past.
If you wanted something like that, I would steer you toward the JBL Studio 5 line when they go on sale (frequently). That would be the budget approach. JBL HDIs would be the pie-in-the-sky approach.
Otherwise, stick with your plan of the SVS... you get 45 days in-home to try them risk free! Yes this is built into the overall cost of the product they sell across the board, but their CS is also quite friendly and dedicated to the consumer.