BGX gives you the most for your money, if you don't mind the ban risk. I used BGX for like a year before i switched to a private one. Some accounts lived for 6 months, others for 2 weeks. It's pretty much a coinflip and up to luck.
If you value account safety, you'll have to pay a bit more for either Elysium ( BGX bypass ) or a private from broeki's list
BGX + Elysium if you want to stay safe and have an good script.
I tested a lot of scripts and none of them was good as BGX is. That's why I paid for Elysium and BGX.