RE: Neoprene, Tygon, and Viton UV Resistance
Not true.
The right Tygon for the job holds up quite well. Look for "Type F" Tygon at better industrial supply outlets. It's good for a couple years. Another Tygon is the nylon reinforced version. It will last much longer. Again, it's in what you want to spend.
Been using Viton for about 5 years now, along with Tygon for much, much longer. Both work just fine for me for as long as I need them to last.