If you're raring to put something on the table opposite the CR-90, and are ok proxying cards, get the Raider. Full stop. It's not even a question.
With the Raider, you get Imperial vs Rebel huge ship combat with flights of pesky fighters swarming around nipping at their heels. It's _amazing_ Star Wars fun.
The Raider also comes with the Ion Cannon Battery, which is a great secondary weapon for the CR-90.
If you do mind proxying cards, get the Gozanti. It has some great new Epic cards that will make all current and subsequent Huge ships perform better. Optimized Generators on an attack ship is a game changer. And Ordnance Tubes look really interesting.
The other option is to get a pair of Gozantis, which will cost a bit more, but should put out a lot of interesting battlefield confusion. You could launch an entire 8 TIE Swarm over 2 turns (6 on one turn and 2 on the next)- maximizing your opponent's inability to target properly.
And yes. Both ships come with some great cards for standard play. I don't mean to sound Kallus, but *yawn*. That's not why we get epic ships, that's just a nice bonus.