Go with whichever will lead to the most prescriptive training routine to allow you to accomplish your goals.
In reading through the INSCYD posts on this forum where Mikael has commented, I think he’d likely be able to give good training recommendations based on your INSCYD results and goals.
I learned a ton from the INSCYD posts and website, and have used that to guide my training (I didn’t do an INSCYD test, but I can guess my profile based on my athletic history and current/recent performance).
It’s great to have clarity and confidence that you are on the right training plan.
For me it’s reduce VLaMax, improve FatMax, and increase VO2 max in that order (roughly, first two are probably tied).
Using a pyramid training distribution of endurance, SS/threshold and VO2max.
I don’t know what training advice you’d get from the lab, but worth having an expectation that it would be something similar to INSCYD/Mikael to be Even worth considering.