I am looking into buying a nice air nailer to help in some quicker box assembly it seems that an 18ga brad nailer would probably work well, but will a 2" brad go into mdf without bending?? will a 15ga finish nailer do the job better??? can you find 15ga finish nails?? is a 16ga brad nailer a better idea?? will a 15 or 16ga nailer leave marks on softer woods??? etc etc.. as you see ive got a lot of questions, i just dont want to spend 100 bux plus on something to find out it doesnt work as well as i wanted it to... ive been looking at porter cable and dewalt mainly but am willing to go with anything that will do the job... thanks for the help!