My experience was different than Flooringit. I like to use the Abrazx for my Texas rigs when fishing the cedar bushes on Squaw. I found it got shredder slower than the Invisx when pulling worm over the limbs. Do not have to retie as often. If I catch a good one coming over a limb I retie anyway. 20 lb seemed to be break about the same on either when just pulling on a hang up with a fresh knot. Could drag the boat to it if did not pull quick to snap it. If I was fishing a grass lake I would use the Invisx. Cast better and less memory.
I switched to Abrazx from Invisix recently-Like others have mentioned, the Abrazx is way more abrasion resistant compared to the other. Not much more memory than the invizix either. Lasts longer too. I use Sunline Assassin also, very comparable imo.
Just like anything else they both have their place depending on the technique. Invisx has more stretch and works great for moving baits like crankbaits. Abrazx is more sensitive with less stretch and works great for jigs and such.