For well over a year I used 50m microbore and 50m unger reinforced pole hose. When that got tatty looking, I went for 100m all season pole hose, which I used for over 6 months. The 1st 20m wore down quickly and I kept cutting small sections off until I had about 60m left.
Last month I changed it to 100m of the gardiners reinforced, and so far it's been great.
Anything between 6-12 months use is perfectly acceptable to me. I find it much easier to work with, especially reeling in!
Oh and if one end gets rough looking, swap it around and get some more use out of it.