I have the Aspire. Very nice tub.
Some people have complained about the jets leaving you itchy.
The jets may be more forceful and directed at a smaller area than some tubs.
This tub doesn't have neck jets, if that's important.
Stereo is nice, but you won't hear much sound from the third speaker (true on all the Calderas), since it plays the difference between the other two speakers. We find the stereo a nice feature.
I wet tested several tubs, and this one felt right for me.
The tub is well made compared to some brands.
I paid $7700 including tax, delivery, crane service, 2 sets of steps, 1 yr chemicals, extra filters, hydraulic lift etc.