Mine works okay, I agree the nozzle could be better, but I find it sufficient for the price. I spent like 40 on mine where as I believe the mistking is 100 or so?
Get what you pay for, but it does do the job.
Changing the nozzle seems fairly easy, but it may be easier to find a tube/nozzle combo and just find a new way to fit the tube to the mister instead of trying to fit a smaller mister nozzle on the small tubing.