Both RDA's are flavor chasers and very similar with the Holic being the newer design. Having both now, I like the Galaxies MTL RDA better. The Galaxies 810 Ultem drip tip is the deciding factor. The ability to be closer to the coils and not burning my lips (except non-stop chain vaping) allows for flavor to come out on some juices that the Holic just can't do. The Galaxies drip tip doubles as a 510 adapter, which can come in handy. The airflow control on the Galaxies is a real pain to adjust and the top cop doesn't come off as easily as the Holic. I'm happy that I have both of them and they are my daily drivers. I'll probably try the Galaxies RDTA next.