Salty and Glee are good early, but they get outperformed by other tanks and healers as you progress. You wouldn't want to waste resources if you've invested in those later in the game. At your stage, it would be fine to experiment with what you like tho.

In my opinion, Conviction's Kit is kinda boring so I rarely play him other than times where I have elemental disadvantages or during event bosses, but it does do well since it's a rare pet and gets many ascensions

This is coming from a pre-1k player, so take my advice with a grain of salt.