I see two version of RGB filters from Astronomik: one is called Deep sky RGB filters and they recommend getting a L1/2/3 filter in addition to it. The other is LRGB filter that is cheaper than the Deep sky RGB. I can't seem to understand the difference. Which one is better?
Also I'm looking into getting Astronomik 6nm NB filters for fast apertures over the Baader ones that are also MaxFR (but bandwidth not known, guess is 12nm). I have heard Astronomik is better than Baader. Is that so? Chroma is way way expensive.