The 590 is heavy, beat cop used/abused, battle proven and has a decent supply of aftermarket parts. For me there are more positives than negatives with the 590.
I'v never had an issue with Mossbergs, especially the 500 and variants,,,,solid guns well worth what they cost,,,never used a 590a1 but expect it will perform that truck gun function well
I carried a 590 (not sure if it was an A1 or not) in the Marines and owned a 590 Mariner for around 20 years. In my opinion they are great, rugged, dependable no fills shot guns. I believe they are best In their stock configuration. Namely no telescoping or folding stocks, they are light for m what they are a in called mine with the telescoping stock " the meat grinder".