Id take the dm4. Maintenance is easy, wide variety of ups. Great gun. I havent owned or known anybody that uses the nerve so i cant say much about it. But from what theyve aquired as a rep is that they are not too reliable. My
05 Proto- Ultralight Frame, Hybrid back
ULE E-mag- TL-63 Trigger, WWA Barrel, CCM Feedneck, Snatch Grip SOLD
LCD Matrix- Cp 1 piece, Cp Roller
SP Ion- Lucky Stage 5, LBM Stage 1, CP Trigger, T-board w/ Virtue membrane, CP Reg, Qev FOR SALE
SP Impulse- Ndz Trigger, CP Cap, Tapeworm, Strange Delrin Bolt
NSG Splatmaster; Spyder Sonix & Victor
BE Eradicator, Striker, & Talon
One thing I do know though, paintball guns, they come they go....
I personally like the dm4, sure its a little heavy. but the software and mechanics are more advanced then the nerve, In my opinion. a nerve is like a shocker and a impulse combined together. a dm4 on the other hand, still has neumuerous ups my personal favourite the Ultralite frame. but hold both see what feels better to you you might shoot a nerve and a dm4 and say hey! this nerve is like a dream! or you might say. man this nerve is a hunk of junk im going with the dm4!