Try Kepler or Colorado.

Detroit is pretty easy, every time you undock 4 or more almost always show up.

Xeno's have 3 bases : Ouray in Colorado.. slightly west of due north from the NY jumphole, Barrow in Hudson, on the north east side of the sun in roids, and Nome in Kepler, about 9 clicks NW of the Colorado jumphole. Both the jumphole and Base in Keplar are in a radiation cloud, so bring nanobots or go due south to get out of the cloud and fight there. Xeno's in Colorado fly starfliers and startrackers and are all rookies. The Aces are at the other two bases and all fly Hawks. Early on if you gonna fight Xenos, use the shields that work best against particle weapons. I think its molecular? Dunno, always like Gravitron for the extra capacity, and better regeneration they have.