I have Andromeda’s too. I use both with the stock campfire comply foam tips, but L on the acoustunes and M on the Andromedas. And they both sound really good off my iPhone 6S.
In terms of sound, they actually sound quite similar. The sound signature at least. (Keep in mind the L comply foams drastically changed the same of the acoustunes, I prefer them over all the stock tips).
Anyway, soundstage and imaging is fairly equal, there’s a lot more bass and impact on the acoustunes, the mids have this really nice thickness and texture but don’t sound muddy or fuzzy, just really chesty. Maybe a little more treble in the andromedas but the acoustunes tend to have a more realistic treble to me. (Bells sounds like bells, etc).
the acoustunes are a little more distant sounding with these tips though, also I reckon detail is about the same but andros pull ahead in terms of detail.
if I was to compare with the stock tips, the acoustunes then easily lose out in soundstage and imaging. And the sound changes to be a lot more mid-upper mid forward, but also a lot thicker - too much. For me they become too thick but the upper mids made them sound clear at the same time, it’s a bit different. They also get a good bit more bass, which again is a little too much for me. Detail sounds worse on the acoustunes, but that might be an illusion from the tuning. As always take all that with a grain of salt. That was all just a random stream of thoughs. Hope that helps!