What is the Difference Between the FLEXiO 2000 or 2500 and the FLEXiO 3000 or 3500?

The FLEXiO 2500 and 3500 are the new, upgraded units to the original FLEXiO 2000 and 3000. The new units are very similar and offer the same capabilities as the original models. The main difference is that the FLEXiO 2500 and 3500 feature a compact, lightweight design that greatly reduces user fatigue and makes it easier to handle when spraying. The FLEXiO 2500 is 20% lighter and the FLEXiO 3500 is 10% lighter when compared to previous handheld FLEXiO models.