 If you liked
Senki Zesshou Symphogear
|
 ...then you might like
Sword Art Online
|
While both series have completely different premises, both are almost identical in any other aspect.
Both have bland and boring Mary Sue protagonist, who excels at literally everything despite barely having any expertise or training and exhausts all potential for character development by the end of 1st arc, have amazing visuals at the cost of lazy writing and poor cast of characters, tries to tell some deep story, but fails miserably at this and are seasonal, but still long running.
In short: If you loved SAO, you'll love Symphogear.
But if you hated SAO, you'll hate Symphogear as well.