As the NH 3 Gun scene's 1301 fanboy, I've shot a 21" 1301 for the last 18 months, and liked it enough that I got a second. You can get them for US$950-1050 out the door. It's ran 100% for me, after a brief break-in period.
I quad load strong hand, and have gotten pretty aggressive with my loading port - check the attachments.
I dig it. It points well, it reliable, and shoots slugs like a laser. Hope that helps.
-Josh