Gun Tests still likes the 11-87. Just reviewed it again.
The 2 3/4" target gun should be comparable to the 1100, nearly identical. I don't think it has a valve to bleed off extra pressure, even.
Long-term durability? No problem. Carry an extra O-ring. For a few bucks, you can get a bag of 'em on eBay. My 1100 Magnum is 35 years old. Works great.
I wouldn't get the Sportsman, but the non-cheapened 11-87 is a fine gun, with many happy owners.