Go to the Remington forum and ask how many have had a shell stuck between the bolt and the carrier.
This is now uncommon when the pump is short stroked!
If you get a chance cycle both pumps. I believe you will find the BPS smoother..... unless you find a old 870.
Try both on for size, as mentioned fit is very important. check out the safeties, which is more comfortable for you?
extra BPS barrels will cost you more $$ than the Remington's
You can empty the BPS magazine by pushing the catch with your thumb, you do not need to cycle the action. Also on some BPS's there is a magazine cut off that comes in handy.
There you have it... more random thoughts , Very random