What is the difference between the FLEXiO 2500/3500 and the FLEXiO 4000/5000?

The FLEXiO 2500 comes with a convenient on/off switch, a two speed X-Boost turbine, and the iSpray Nozzle.

The FLEXiO 3500 comes with a convenient on/off switch,, a nine speed setting X-Boost turbine, the iSpray Nozzle, and the Detail Finish Nozzle.

The FLEXiO 4000 sprayer has a turbine that sits on the ground delivering air power through the hose to the spray gun. It comes with the iSpray Nozzle, Detail Finish Nozzle and 15ft air hose. It also comes with a storage bag that holds the air hose and nozzles. 

The FLEXiO 5000 sprayer has a turbine that sits on the ground delivering air power through the hose to the spray gun. It comes with the iSpray Nozzle, Detail Finish Nozzle and 11.5ft air hose. It also comes with an integrated case for storage of nozzles and air hose.