How good is the sith marauder's extinction class fighter?

I usually run Vader's tie advanced and maul's ship on my fleet. However after seeing the sith marauder's extinction class fighter I've been thinking about doing a complete overhaul for my current fleet. I was thinking of running something like tie advanced, biggs star fighter, hounds tooth, and the extinction. How good is the new sith fighter? I dont want to invest in something that may not be as good as I thought