This connector is the genuine original XT90 connector. Use this for your 7" quads or anything with high power requirements.
5" race quads also stand to benefit from using XT90 over XT60 connectors. You do actually get improved voltage stability and more amps as long as the cabling is 14awg.
13.6g for the male/female pair without the wire collar
15.2g for the male/female pair WITH the wire collar