Help choosing a DAP (Sony ZX300 or A&K SR15)

Hello everyone, i'm new to this forum and i'm currently looking to solve a problem that im dealing with.
I can't decide between the Sony ZX300 or Astell & Kern SR15 a&norma.
I've read a lot of reviews and seen youtube vids but they only show people using IEMs. i personally dont use IEMs nor will i because its uncomfortable for my ear.

the headphones i own and i'm hoping to be able to use with the following DAPs are as follows.

Bang & Olufsen H6 (2nd Gen)
Focal Elegia
Audeze LCD2C
Beyerdynamic DT1990 Pro

my collection is a small and modest one, and i'd like to know if either of these daps can power them SE(single ended 3.5mm)
I'm aware theres more power to be had using balanced (2.5/4.4) but this is strictly for SE.

PS: i threw the Audeze LCD2C and DT1990 Pros in there not for outside use, but more along the lines of wandering around the house or in the backyard sitting and enjoying a cuppa tea. it's more for the H6s and Elegia and possibly other headphones that sit around the 32 - 150 ohm mark.

Thank you very much for your wisdom and advice