What are some good holsters

Glock 17, Holosun optic, Streamlight tlr-7 HL-X. I know tier 1 is one of the best, they offer IWB holsters compatible with specifically the light I've got. But which model would be best? I was thinking maybe the XIPHOS Elite. Any other models or entirely different brands that are reputable and good for a first time conceal carry? Thanks.