A word of caution!!
The small gauge hose is fine for the pole hose, but the longer it gets, the less efficient it becomes.
When you are using up to 50m and above on a hose reel the water flow can drop to a trickle.
This doesn't happen with standard guage hosepipe.
As a rather weak example, try blowing down some standard 1/2 inch copper pipe, say 3 or 4 metres of the stuff, then try and do the same with the narrow guage stuff.
Or try it with standard hose and the 6ml hose, even on a short length you will find it much harder to blow down.
This is why those who use van mounts and 50m plus hose reels use the standard guage hose.
Give the guys at Cleantech a ring, they have had first hand experience of this (it was these guys that explained it to me, I was intending on going down the small bore route too when I started.)
And the small stuff gets just as bloody tangled too
Regards,
Ian