I have no experience in the 280 ai, however I've been using exclusively ABLR and regular accubonds in my 30 calibers for a couple years (longer than that for the regular accubonds) and here's what I have found.
AB Long Range has a thinner wall, making it expand much better at lower velocities, perfect for those longer range kills. In slower cartridges such as the 30-06 which can only push the 210's to 2500-2600, they expand well at any range. With the magnum calibers pushing them 2800+ they work great at range, but inside of 150-200 yards they kill, but they can fall apart, as they're not strong enough to expand and stay intact under high velocity, especially with that of the 300 rum I used to have.
Accubonds (the plain ones) don't have as good of BC, but its definitely not bad, and much tougher. If you're pushing them at velocities out of the muzzle at 3200 fps or something crazy, they will still hold together, although they will lose a fair amount of weight at that velocity, they will be much better in close range.
I dont know what velocities you are getting with the 280 ai but if 2800 or lower I would go with the ABLR, if 2900 or higher I would stick with the regular accubonds, that is if you don't plan on shooting longer than 500.