Both can be dangerous if used improperly
Neither
The best way - go to near airsoft workshop, give them money and tell what do you want. If you decide to modify airsoft gun by yourself - be warned, this may ruin your gun and even be dangerous to your health.
No airsoft gun under $100 is going to last for more than a few games, so none are truly "good"
the only real danger is if you get one in the eye but even then its proven it takes 1joule airsoft to punture the eye
Paintball hurts MUCH more than airsoft. The reason that Paintball hurts more than Airsoft is because the speed of the paintball is faster and the mass is also larger. Take an Airsoft BB and a paintball and look at the difference in size. Now, when you figure that Paintball markers have much greater speed than an Airsoft gun, you will find that Paintball will and should hurt more.
Yes, if not in use for more than five min
No. even though some spring guns have great range, co2 allows you to fire more then once before reloading.
A BB gun would be more powerful
Ahh figure out what the problem part is than figure out how to take the gun apart and put it back together from YouTube, an airsoft forum, or from an airsoft website. Than buy the replacement part and put it in the gun. If the gun was bought for under $100 than you would be better off buying a new gun instead.
Paintball gun. You can see where you hit your target. I disagree, if you are looking for a more realistic looking weopon then use an airsoft gun
no. infact there are airsoft guns made to do that. it only makes the fire rate slow for that particular shot.
you have a bad clip.