This is the best cleaner you can get for that skimmer.
http://aquadriverusa.com/products/aquadriver-skimclean-helix-160
It's made in Germany and of the same quality as your new skimmer. These aren't cheap but nor was your skimmer. They use a very high quality gear driven motor that rotates much faster than any other SCH on the market. 15 seconds, one a day will keep not only the neck clean but also the lid. These self cleaning heads include a wiper not only for the neck but also the lid and the ring on the lid. Speaking of lid, the lid is made of PVC just like the white parts on your skimmer and not made of acrylic. They also have a built in wet wiper system that draws water via tube that hangs down into the skimmer body and sprays it onto the inside of the neck as well as the lid when the wiper motor spins. No other wiper setup cleans the neck and the lid. No other wiper setup features the sprayer/wet wiper setup either.
There is an optional washdown ring that sprays onto the collection cup walls but it requires a water source such as a dedicated pump or hose spigot. That connection is a standard 1/4" RODI style John Guest fitting that is mounted to the lid. That said, I don't think the wash down option is available on the 160 sized lids. All things aside, these are much much much higher quality in every respect compared to those from Avast or other vendors. I've used an AquaDriver on my skimmer for the last 5 years and wouldn't change a thing. The new Helix model is also only 1" tall from the top of the lid so it fits well under a tank unlike other SCH's that stick up 3 or 4" above the lid.
These are also the same ones that Royal Exlcusiv offers in Germany.
http://aquadriverusa.com/products/aquadriver-skimclean-helix-160
If you click on the description, there is a video in there showing the construction and features. These come in sizes ranging from 160mm all the way up to the 500mm sized skimmers.