bushmaster1313 and
chevyforlife21, my apologies are extended for the tone of my previous posts in this thread - yesterday was "one of those days" and I got a little grumpier than I shoulda.
If you care to do a search and read up, you'll find no shortage of back-and-forth on whether the Remington 870 or Mossberg 500 is a better shotgun, and like most other "what is best?" questions, the only answer is - the one that works best
for you. I haven't been that impressed with the build quality on the 500s I've messed with, and I can't stand the Mossberg forend rattle/play, so I run an 870 - but I love the tang safety on the Mossbergs, and, in theory, I think the pump release is in a better spot. In practice, I do a lot better with the 870 just because it's what I'm used to and what I grew up using.
As AB mentioned, all pumps are fundamentally about the same in function, and it's doubtful that you're going to get any sort of advantage out of any given model. What you
can do is accessorize as you feel necessary - the 870, for example, has jumbo safeties, high-visibility followers, all sorts of forend lengths/shapes and so forth available to correct any deficiencies you may perceive in the stock product.
Other than that, the best way to ensure the smooth, reliable operation of your shotgun is to put a bunch of rounds through it, wear it in and practice the smooth, reliable operation of
you.