R-ALA is certainly better, and I believe the dosage is 3x smaller for same effect, I just plop the two together as ALA though.
Tyler's would be a more all encompassing liver protectant if you are looking for one supp, however for some using highly toxic 17aa's the use of both could be advised, or 3 or 4 elements stacked together. On my next cycle I am thinking of using MT, ALA, and NAC. Perhaps overkill, but you only get one liver after all.