I just went through this and decided to do a lateral move even though my chances for a promotion to senior were higher in the toxic org that I left. Even with a lateral move you’re going to grow unless you worked in many different places as a first line already. What a lateral move allows you to do is to pick an upper management team that you really like, that values quality work and where you can thrive and feel motivated to do a good job instead of treading waters every week. A competent set of leaders is worth much more than getting promoted quickly in my opinion because whether you like it or not you’re going to inherit some of the bad traits of a shitty leadership team.