I had researched a bunch before buying this unit and in general its a good quiet machine. But the major issue is the drain valve at bottom. The tank is too low to the ground and you cannot fit your hand under to open the valve. I need to get a helper to tilt the machine so that I can open the drain. The wheels or axle need to be higher to make access better.
Also, it would be nice to have a spot to hang the hoses and even a compartment for the fittings.
Aside from the weight and balance being spot on I can't really like this hammerhammer.
There is an excessive amount of vibration when striking a nail or solid surface.
The nail setter doesn't hold the nail securely, giving you about a 50/50 chance of setting a nail successfully.
The handle has a lip where it meets the neck, often catching on the hammer loop when pulling it out.
Pros: weight and balance
Cons: excessive vibration, poor design of nail setter, handle needs more refinement