Alas, the budget won't stretch that far for a while. At $25 each, here in New Zealand, I'm only looking at two for now, 1 Imperial, 1 Rebel.
So for the Imp what where you thinking? Based on what you have (Imperials: 1 TIE/Adv, 2 TIE/Int, 3 TIE, 1 TIE Bomber, 1 Firespray-31) I have a thought for you, Go Defender. Before I am burned at the stake, Here is why,
First - The Phantom looks like an Intercepter for movement, and play. I noticed you have a couple of them and I have found it great to try out the other ships.
Second- The defender looks to live a bit longer then the Phantom. Base stat is 3-3-3-3 vs 4-2-2-2.
Third- The defender can ion pulse a ship next turn White K-Turn then Blast range 1 with a HLC.
Look I am more Excited for the Phantom when most I don't want to under state that and I am looking forward to flying 4 in battle but I also have a ton if different options if I were in your shoes and had to pick I think the defender is more of a backbone to lists then the phantom. If you enjoy dancing around with the inter go Phantom if you want something a bit different that is going to stick it to any ship rock Defender.
Last thought a Defender and Slave are going to wreck people hard. The ion pulse from the defender and the Fletch Trop on the slave combo are going to really hurt people. Match with a fly by and take actions then shoot is nuts.