The AbrarX has a higher tensile strenth than the InvisX, it should have a little less memory then the InvisX and a lot less than the Carbon Pro. Carbon Pro does not work well with spinning reels.
There is also a cheaper version coming out called Red Label, in looking at the test done it will be the best of the lines in knot strength with the least stretch of the four lines. it is also ranks lowest between the four in softness and abrasion resistance... sounds like a cheaper version of P-line to me, and since Seaguar make most of the flourocarbon lines in the market it would not surprise me to be the same quality as P-line. just my two cents.