This is a question for BSW or anyone who may have the answer to my question.

Which line of rainbow speakers are offered in the BSW website for the X5? I've expereinced awesome sound from an upper line of rainbow speakers that cost more than 2x what is priced here on BSW website. Just wondering if this is an awesome buy or a lower line rainbow speaker. On a side note, I'm still very impressed with the lower line rainbow speakers, great value.