As long as Biden keeps it to a mostly positive message he has my vote. Warren and Bernie run a bit too negative troll for me, it is easy to be against everything, easier to sell people on it anyway, but we need to move past that after the last few years especially. I think it is good to have them in the conversation, they bring a needed perspective, but they won't be able to get much done similar to Trump because they make it easy for the republicans to dig in.
Also we know Biden has been around and is likely not a Foreign puppet. I do like mayor Pete, Harris, Booker and Klobuchar, and a few of the others will be fine too. But I'd prefer a 4 year Biden presidency to root out & bring to light all this foreign (and domestic) election interference and kind of reset the world relations back to a more non-combative stance with our allies, and we can hopefully take a big breath as a country and pick a good candidate again in 2024.