A Travelcard Zone 1-2 is a bit like a buffet lunch. You pay upfront, and then you feast on the city’s transport until your feet hurt. The contactless daily cap is like ordering a la carte—it’s cheaper, but you’re always calculating the bill.
Which one’s for you? If you want to devour London like a hungry foodie, go for the buffet. If you’re just snacking, stick with contactless. Either way, you’ll end up with stories (and probably blisters).