The more I hear about peoples experiences with neck cleaners it sounds like they are a much better investment on a mid-priced skimmer than a spendy skimmer. I'm sure that doesn't apply to extremely low end skimmers. Does anyone with a neck cleaner have a different view?
I would get the better quality skimmer then at a later date add the cleaner. Buubleblaster and red dragon pumps are very quiet (there are other great pumps out there as well), my red dragon 12m3 which does similar flow vs a dart is silent. My experience with cheaper stuff is the pumps make lots o noise and do not last as long. Depending on how your tank is setup noise might or might not be a issue......
I have had an Avast neck swabbie on my ASM G4+ now for about three weeks and am very happy with it. It is a bit fiddly and does require some precision when retrofitting to a third-party )non-Avast) skimmer, but it is the best 'mod' hands down that I have ever done to a skimmer. My longer-term plan was to move up to an Aquamaxx E500, or something similar, but based on my initial experience with the swabbie, I may not bother.
The Avast CS1 is fantastic, I don't see why you would get anything else on that list besides that.
The CS1 + Swabbie will skim as good or better than anything it's size. It's going to outskim anything you buy because it will have a neck cleaner. I'm saying this as a XP1000sss Bubble Blaster owner. The Sicce PSK-1000 is a fantastic quiet reliable pump.