11.11 made me buy two IEMs and I'm lost

I have a Dunu Titan S and, although I know that the Titan S2 is not simply an evolution of it, I ended up buying it because I really enjoyed the experience.

It turns out that still during the 11.11 promotions, I managed to buy an Aful Explorer for a very good price for a Brazilian, without even thinking about it too much.

Now I'm wondering if I exaggerated, if they are similar and it doesn't make sense to have both, or if they will serve different experiences. I'm completely new to this area, can you enlighten me?