Went in here fully planning to vote for 19, but then I really looked at the cards and man I fucking love 26. I know I'll probably be one of the few votes for it here for sure but that's one I'm going with. HBK/Taker is easily the best match of either card, but really outside of the divas match and opening tag which were super short, nothing was bad at all, and Jericho/Edge was great. The rest of the card didn't have anything else the stood out like that but they were all really solid except Bret/Vince def lasted too long.
19 had Angle/Lesnar, Rock/Austin and HBK/Jericho which were all great too, but I feel like the rest of the matches are all too long (except the tag title match and cruiserweight match, those probably should have gotten longer) and kinda drag the show down, even the ones that were already short like the Taker match and Women's match bc they were really meh, though I'll grant you up until that point it was probably the best women's 'Mania match. But Trips/Booker and Vince/Hogan were too long despite still being good matches, just think I would have enjoyed both of them more if they were shorter.
I'm probably way overrating 26 just bc of how much I love the HBK/Taker match, but I think it deserves a lot of credit for it's consistency of matches, definitely not trying to shit on 19 either bc I love the show and it's easily one of my favorite 'Manias.