All three reach the same market with the same account, balance and orders behind each. Copy one rather than typing it, then confirm it on the login screen before you sign in.
Read this before signing in
Open these in Tor Browser only. When the login screen loads, compare the onion printed on the page against your browser address bar, reading from the end backwards. A copied page reproduces the design perfectly and cannot sit at the real address. If they differ, close the tab.
Plenty of advice about this subject sounds serious and changes nothing. Here is a plain ranking of what genuinely moves the needle, what is merely tidy, and the two mistakes behind most of the losses people actually have.
What matters most, in order
Confirming the address on the login screen. It costs two seconds and it is the only defence against a page that copies the market perfectly. Nothing else on this list prevents as much damage.
A password used nowhere else. A leak somewhere unrelated is how most accounts are lost, and reuse is what turns that leak into your problem.
Two factor enabled. Converts a stolen password from a disaster into an inconvenience.
Getting Tor Browser from the project and verifying it. Everything else assumes the browser is the real one.
Security level on Safest. Removes the surface most browser attacks arrive through.
What sounds useful and mostly is not
Adding a paid tunnel in front of Tor. It changes who sees that you use Tor and does nothing about anything else, while adding a company that knows your name and your traffic times.
Privacy extensions in Tor Browser. Every addition makes your browser more distinguishable, which is the opposite of the intent.
Switching addresses constantly. It throws away a working connection and signs you out, and the addresses are equivalent anyway.
Clearing history after the fact. Useful housekeeping and no substitute for a system that never wrote anything down.
The two mistakes behind most losses
The first is searching for an address during an outage. Copies rank precisely because that is the only moment anybody looks, and everybody looking is anxious and in a hurry. Saving all three in advance removes the moment entirely.
The second is reusing a password or a username. It has nothing to do with Tor, nothing to do with the market, and it is responsible for more lost accounts than anything technical on this site.
What no site can promise you
That any of this makes an activity safe. These pages reduce the ways a setup fails and cannot change what a setup is being used for. Anybody telling you otherwise is selling something, and on this subject the people selling things are the ones to be most careful with.
The plain summary
Get the browser from the right place and verify it. Turn the security level up. Save the addresses. Check the address bar every single time. Use a password and a username that exist nowhere else. That is nearly all of it, and none of it costs money.