Couldn't hurt to ask em Ice! I own the astronomik CLS filter that I bought from Bintel and I've used it quite a lot now. Seeing as it's my first nebula filter, I cannot compare it to anything else on the market. However, I can say that it is a great all round filter that works a treat on nebulas and globulars, although it does have a slight blue tinge (obviously because of the coating). When I went searching for an all-round filter, I think it was Don at Bintel told me that astronomiks make excellent filters and are better than the broadband ones I was looking at from other brands. This filter darkens the sky whilst still letting the stars shine through, whereas Don said the other ones didn't let as many stars through as this one. All I can say is that my first view of the eta carinae nebula with the CLS filter took my breath away. I just can't look at a filterless nebula from my suburban skies anymore
The CLS is cheaper than the UHC, the only reason why I went for this one instead. The UHS is probably better though. They're on sale at Bintel now so you better hurry!