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I have bought both Astrodons and Astronomiks in the past. I currently own one set of 1.25" Dons Gen2 with NB (5nm Ha and SII, 3nm OIII), one set of 1.25" Astronomiks (LRGBHaOIIISII) (recent), on set of 2" Dons Gen2 with NB (5nm Ha and SII, 3nm OIII) and I also have an LRGB set of 2" Gen1 Dons. They are all good filters. The recent Astronomiks are much better than the past versions and probably close to the 5nm Don Gen2 Ha filters I own in performance. Recently I chose the Astronomiks simply because they were the most affordable solution to the problem. The 2" Dons I bought cost 7K last time and I would not even contemplate buying them at the current price. So I reckon go with the filters that produce good results at the best price. You would need to consider the impact of moon light and light pollution into your choice as this will be significant in the duration you can image from the metropolitan area.
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