Colab is great. I use it all the time when I am on the go, i've even used it on my phone, haha.

Problem is I often deal with datasets with over a million observations, which is not a great combination.

Pluto.jl certainly wasn't for me. I don't use Jupyter much because I mostly end up writing C/C++ or even better - Julia so I spend a lot of time in Atom in the first place.