I use 100m of microbore with a 100psi flojet.
Brush's have two 2mm needle jets.
Pole hose has inline valve to control flowrate.
Microbore is the version that Gardinerpoles supply.
Perfection all round...really.
Most of the time I need to turn the flowrate down slightly and the pump doesn't falter or stutter.
I can't compare the 100psi flojet to the 100psi shurflo so I don't know if the result would be the same with one of those, the Flojet is the more expensive of the two pumps, but but so far I've been dead impressed
If I leave the flowrate at it's maximum, and aim the water jets into thin air, I have 2 streams of water shooting well over 10ft, maybe 15ft plus and that has to be enough water for anyone.
Prior to microbore I had 100m of normal garden hose (tricoflex) and a 60psi pump. (shurflow)
Jets on brush were two fan jets.
I always had the pump on maximum, with the micro bore setup I currently have I am saving at least 25% (or more probably) on the amount of water I'm using everyday.
I cannot comment on the performance of different makes of microbore, it all depends on the internal diameter of the hose concerned.
But with the above setup, 100m of microbore (Gardiners) really is perfect.
Ian