SRO XP-2000 costs around $450. Rated for 180g. The Bubble Blaster pump pulls 34 scfh of air.
Diablo XS 200 costs about $325. Rated for 200g. The Sicce PSK-1000 pump pulls 32 scfh of air.
Sea Side Aquatics CS8 costs about $340. Rated for 230g. Sicce PSK-1000, 32scfh.
So the SRO XP-2000 is closest to your price point. I've heard great things about them and bubble blaster pumps. It has a 3-year warranty as opposed to 2 years on the Sicce (but if the time comes when you do have to replace it, it's expensive.) Does this all this mean it's worth spending the extra $100 over the CS8 or the XS 200? I don't have the answer, maybe someone who has used more than one of the listed skimmers will chime in with the info.
If it were me, I'd get the CS8 and spend the extra $100 on lighting.