Replying to Bindings

Tbh I hardly know shit about bindings. I had marker 7.0 for around 4 years. Yesterday I threw a 5, landed a bit off, and the whole back part of my binding fell off (definitely not fixable). I never really had any complaints with them, I liked them because they were light (probably bc I bought them when I was 11) and the brakes were still on. Now, I am looking into bindings and have no idea what to look for. I am 5'5" and about 110 pounds. Normally my dins are at around 7. I ride park and would say I fall in the "advanced" category. Of course I want cheap bindings and since I am not that heavy I would like light bindings. I dont really hit big jumps if that is some sort of determining factor. My boots are salomon quest access 70 size 27. A friend gave me some old bindings as a temporary replacment. They are ok but heavy. Could anyone give me some tips for what to look for in new ones?