Some of the FXAA versions are freely downloadable, so implement them as well and do some head-to-head comparisons.
Your screenshot looks good, but it's a very simple case. You'll have to test on a bunch of other scenes to see how well it compares.
Unfortunately nVidia has decided to sell TXAA as middleware, so you need to sign an NDA to get any info on it at all.
Epic have spoken about their temporal-AA solution here: https://de45xmedrsdbp.cloudfront.net/Resources/files/TemporalAA_small-59732822.pdf