I own a 870 tactical express (Love it) and never had any problems with it and its very well built (no jamming ever) maybe i just got lucky.

Plus a pump is a hell of a lot more reliable than a semi shotty I would go with 870 for reliability.

But Benelli SN are nice guns and would love to have one to.

I think the Remington Express line are well built and nothing is wrong with the line go out and take a look what is being offered in that line.

You really have to go and look for yourself and make your own decision on what you want to get.