I find once you use a hose for a bit then let it sit for awhile the rust will eat away the inside. I have been using the legacy 2 wire (Semperit) hose with great success. It costs 10 cents more a foot, but lasts over double the time then the single wire stuff. I don't think a hose crimper is worth it for me, 2 hoses a year is all I go through, and I might fix each once.