thats good advice from moose,
I own 3 cordless paslodes, 1 framing and 2 finish, and they work great. Don't jamb that often on me, mostly just like moose said you need to adjust for different woods. What really sucks is that it takes a special oil for cordless nailers, at least for the paslode I have, not sure for the Dewalts, and it's costly for the small bottle you get compared for the traditional oils for pneumatic. But you WILL BE GLAD to hav this tool the first time your using it, the freedom to be cordless, no air compressors, no electricity. Only thing I have to worry about it keepign battery charged and extra gas cylinders, Though the fuel cells can get costly, they drive ALOT of nails and offset the cost of the maintainance/hastle of the aircompressor alot, not to mention a great time saver.
The nails hold well, very acceptable for finish work as mine used same nails as a pneumatic would. Paslode cordless requires cleaning using a spray degreaser and taking apart heads and such, NOT a hard job, dont' know if dewalt requires the same thing. I don't know if the dewalt is 100% battery or if it to has a fuel cell but it could be that paslode is fuel powered. Might want to look into how many nails a paslode/dewalt will drive per charge/cost comparison, im not sure. Not sure if you are just a homeowner wanting it for projects or do something with it for a living, but Only problems is if you work on a crew you might have a hard time keeping it out of the hands of other crew members. LOL
EDIT: what Jason said is very very true, for sheathing or fast applications a cordless is not something you want to mess with. I have both compressor/pneumatic and cordless and since majority of my jobs are small ones the cordless suits my purpose.
Years of experience, www.krazeconstrution.com(not complete, im experienced in construction not webdesign)