I've owned both and here are my opinions on each one. The Nova I bought the first months they were released. I shot alot of rounds thru the gun and never had any problems with it. The downfall is the one piece polymer stock/receiver. I couldn't hit a thing with the gun, so I patterned it after gettin frustrated shooting doves. At 35 yards the gun shot a foot high and a foot right from where I was aiming. I traded it off needless to say.

The 870 is one heckuva gun. If I was to buy a pump it would either be an 870 or a BPS, as I think they are the 2 best pumps on the market today.