I'm a little late here, but maybe someone will find this useful.. I have a A300 Ultima Patrol and its been fantastic. I have 4 cases of #7.5 plus many more boxes of 00, #4,5&6, Nitro Turkey, slugs, 2.75" & 3" varieties through it so far with only one hiccup, and that was a 3" Turkey within the first 20 shells when brand new. The 3" got hung up on the way out just that once and it hasn't happened since on anything, long or short.
Its operation take a bit of study and practice to get used to, I highly recommend some dummy rounds to practice cycling it and figuring out the various modes and how/when the lifter works or blocks the tube.
I think there are a few too many plastic parts on it for the price, especially compared to my 590A1, but that's resolved by a trip to
GG&G when you're ready.
I've thought about trading mine for the 1301, but only because I'm running many more shells through it than I though I would shooting skeet and whatnot.. frankly its way more fun than a pump
The 1301 has several upgrades aimed specifically at a long long life.
I would definitely buy the A300 Utima Patrol again for normal/typical/average use, but I'd go with the 1301 if shooting regularly.