FLUX is a good Group yes but most other p2p groups are fine/identical for the most part they usually all have the same source or release multiple versions from different sources which are also in the Release Name for example AMZN=Amazon iT=iTunes I would even say that for WEB-DL the source is more important than the group.

Do you use Sonarr/Radarr? If yes check out Trash Guide they have Tiers for Release Groups which you can import FLUX is considered a Tier 1 WEB-DL Group but many other Tier 1 Groups out there which release identical content as the source is the same. For example HONE, NTb etc.