these are the ones that i use.. with different spray heads..
I buy them local.. from a Betco supplier.. They are supposedly chemical resistant... and premium spray tips.
I 'll always invest in the better ones.. and just take care of them daily.
to each their own.
I take whatever ones that I use daily.. and put them down in a qt of water.. and squeeze them all for a few seconds.. and flush whatever I used.. OUT as good as I can. I find that I'm getting 3x the life out of them.
So it works for me anyways.
If I'm running a solvent thru them.. i spray thru them right after each job.. and empty the jug back into the original gallon container via funnel.
THis system is working.