What after a Lyra Delos, if any ?

Hi all
I don't have vast experience with carts and I love my Lyra Delos MC cart. I've read here in A'gon that you have to climb very high in the Lyra chain to better the delos.
I don't even know to define if i'm missing anything but from anyone who had or still own the delos - which other cart did it for you and in which parameters ?
Thanks in advance to all repliers.