I'm not saying there aren't newer designs out there, I'm saying that just because there are doesn't mean something that has withstood the test of time is not worth much.
Look at the "new" octopus 2000, it's rated at 50 scfh max and good for a tank of 250 gallons. Then you have the compairable air draw of the ATB 1050 with the airstar pulling 45 scfh and it's tank rating is 480 gallons. Seems like cramming 45-50scfh into something small doesn't mean it's going to work better.
This "scfh fad" has brought us how many new skimmers in the last couple years, you have the Msx/Octo Extreme, Octo Pro, Hurricone, Super Reef Octo...etc A few of these were "old" before they even took off. Some have had revisions to make up for errors in design. Now the cone fad has hit and unless your cylinder skimmer pulls enough SCFH to skim the ocean it's "obsolete". One cone manufacturer that I've heard nothing but good about is I-Tech...there 100 is roughly $450 plus shipping and it's good for a solid 120 gallons or so. It also only pulls 14-15 SCFH or so and does a mighty fine job day in day out. Just because you can get another cone cheaper that pulls more air doesn't mean that the I-Tech is worthless now.
If some of these "manufacturers" spent the time and money actually designing their skimmer you would see the price of them much higher. Now you have "new" cones hitting the market and everyone thinks they have to have more airdraw in a skimmer so cylinders and cones that don't pull as much seem to be looked at as "old".
Some of the best reeftanks I've seen are with "old" skimmers, The owners have developed the husbandry required for the great coloration and health that many of us dream about.
I'm sorry if I have de-railed this thread any, I appreciate the time taken for questions to be answered and it is a valuable resource for people looking for skimmer advice. I just hate to see good skimmers that have many years of service looked at like "obsolete" because something new has come out without proving it's any better.