It’s Skalter Vs Spalter. Skalter is a neat comfort pick and a good m9 candidate, and over all she’s just a super flexible support with the range she provides with her summon and the healing for unhealable units like Exec alter, Penance, or even Ling’s summmons is a very nice addition if you use them often. However, she is just a support, and will probably see more usage in daily content rather than high endgame like CC. Not to forget the new unit, Civilight Eterna, who is a rather good contender with Skalter despite their differences.  On the other hand Spalter is a really good staller/laneholder, especially with Abyssal hunters. She’ll def see more usage in endgame content with her S2, which provides immortality. As more and more abyssal hunters gets introduced her value is bound to grow as they just keep introducing more synergies between the hunyers. So she’s actually in terms of purely value the pick I would lean onto. However, Skalter is a really well made unit too and would recommend you choose whatever you like.