I did a review of a 12 gauge A-10 when they first came out. It was a most impressive gun. So much so that I ordered a 30" 20 gauge. To date I have just under 6,000 logged rounds through that 20 ga A-10 and am more impressed with it each time I shoot it.
My 20 did have a few adjustment issues when I received it so, after shooting it a bit to let it settle in, I returned it for some attention. I was stunned when I received the gun back. Not only were all the adjustments I had requested properly completed, but the gun was returned to cosmetically new condition, even though I had not asked for that. Very impressive service.
I particularly like the balance of the 30" 20 ga A-10. The barrels are light, lively and long. While a rounded action receiver would make for a more comfortable one hand field carry, it's a small inconvenience for using a true detachable sidelock O/U.
My particular gun weighs 6# 7 oz so it's a little bit heavy for a close cover field 20, but not too bad. If I'd ordered a butt plate instead of a recoil pad, I'd have saved a couple of ounces. In open field hunting and fun clays, the weight and barrel length are ideal.
At today's pricing, the A-10 American certainly has a lot of competition, but it is a good gun and has a good company standing behind it.
Gil