I am thinking of upgrading my 2015 27" iMac 3.3 i5 / M395 24 GB ram to a 2018 Mini. One benefit for me is having a separate monitor because I may also built a PC. I use the iMac for lightroom, Photoshop office surfing etc... and it fits my needs right now. Has anyone done a similar move? I am wondering is it a upgrade or a sideways move.