homemade central vacuum hose works well
I mostly have hard floors in my apartment, and I already have an electric hose that I can use with my power nozzles for cleaning my area rugs. I also had a plastiflex low volt hose that I use for most of my central vacuum cleaning. Though it's crush proof, it was starting to get some indentations that would not disappear, so I decided to replace it, and I chose to go one step above the typical 1-3/8 size and use the commercial diameter of 1-1/2 inch. The airflow is amazing, better than any central vacuum hose I have used. Here is what I used to create the hose and then I'll talk about the advantages and disadvantages. First, you need the actual hose, and here is a link where you can purchase it by the foot, up to 50 feet.
http://www.centralvacuumstores.com/...32-1220-22-hose-1-12-inch-comm-grade-per-foot
You will also need a cuff to attach to the hose that will go in to the central vacuum inlets, and here is a link to that.
http://www.centralvacuumstores.com/dust-care-32-1399-01-hose-cuff-w-metal-end-comm-1-12-inch
And finally, you will need a handle on the other end to attach your wands and attachments, there may be others out there, but here is the one I used, this also works with backpack hoses since it's the same diameter. Personally, I prefer the pistol grip, and this handle is gas pump, but it's not a deal breaker. This will give you a gas pump handle that swivels, it also has a suction relief valve and will work with friction fit or button lock wands. It screws directly on to the other end of the hose, so no need for any adapters.
http://www.centecsystems.com/1-5-hose-to-1-25-premium-swivel-handle-locking/
Now for the advantages and disadvantages. The biggest advantage is airflow, it's quite a bit more than the hose I replaced. The sound is quieter as well, probably because the air has more room to travel. There are a couple disadvantages. The hose is a bit heavier, you don't really notice it while vacuuming, but when you want to put the hose away, it's not as flexible, I strongly doubt this hose could be crushed though, whatever it's made from is quite hard. Also, there is no way to turn the vacuum on and off from the hose, since I connect the hose directly to my units, this isn't a problem. You could use the volt power nozzle with this hose, or a cord is available that would allow you to use an electric power nozzle.
http://www.centralvacuumstores.com/...ons/central-vacuum-36ft-power-cord-06-5500-96
Again, if you want the best airflow, no question, this set up is worth considering.