Table games and it's not even close, the skill element is what keeps me coming back, slots are just waiting to see what happens and that stopped being enough for me a long time ago.
slots because I play alone at my own pace and table games stress me out when other people are involved, online or live it doesn't matter, I don't enjoy the social pressure of it
Table games without hesitation, there's a ceiling to how good you can get at slots which is basically zero, with poker or blackjack you can actually improve and that makes the whole thing more interesting over time.
Slots, and I genuinely tried to switch to table games last year and lasted about two weeks before I came back, some people are just slot people and I've accepted that about myself.
Table games, played slots for years and eventually got bored, there's only so many times you can watch reels spin before you want something that actually responds to how you play.