I have all 3 .
The 1300 is the quickest to pump ,but extra barrels and acceseryes are few and will not hold up as well as a 870 in the long run.

The 835 shoots 3 1/2" shells ,if not into long range water fowel so what, The 1 I have feels klunky after shooting my 870

The 870 is the best IMO
Extra barrels and other stuff is easy to get .
Dads 870 is 30+ years old and has had 10s of thousand rnds thru it ,and still going strong.
I replaced a exstractor 10 or so years ago ,thats the only thing other than cleaning that has been done to it.

IMO buy the 870 ,your Grand kids will thank you when they use it in 40+ years