Update: I think i'm gonna go with the Apogee Elements 24. My main issue was the headphone output with the 8i6 and others - although the Spdif socket are tempting.
I looked at the Universal Audio stuff, the Arrow required Thunderbolt 3 and the Twin is expensive and potentially a gateway in to more plugin purchases.
The Apogee duet was ideal in form factor and portability but it has been improved on by the Elements 24 - better headphone and improved dynamic range in the A/d converters.
I just want to recorder my Kemper as I hear it through headphones. Very simple but with high quality. The Elements 24 will give me that and as I can control it via the IOS App - via wifi - I can hide it away and keep my limited space clear. It also can do SPDIF via an optical/SPDIF converter. Also, its sit at a price range in between the Scarlett 8i6 and the Apollo.