I would always suggest checking out and using eXch official onion link, this is harder to DDOS attack and it is better for privacy.
Better to bookmark onion link in Tor browser to avoid phishing attacks.
That's what I did. The exchange's official onion link is bookmarked on my end, but before I use it, I still check this thread and the clearnet site to see whether there was an announcement that something changed or happened to the old domain. Better late than sorry. It requires two extra steps, but I don't mind doing it.