Great price on sub / worth it ?

Tweeters has the Mirage Omni 12 reduced from $799 to $499. The demo went good bur still necessary to adjust between music and slam bam of movies.
Not many reviews. Any opinions ?
Trust your ears.
Hsu sub is good - I even like $80 sony sa-wm250.
I haven't heard that sub, but the company is a good one, so probably ok.
PS I own an HSU sub and love it