I've used MD as my field 2-track of choice for decades now. Very small, inobtrusive, but solid performance. At present, both the portable and the studio MD deck are both Sony units.
But that's not the whole deal there...the big performance kicker with my MD use are these fantastic, tiny omnis that I use as a binaural pair, clipping them to my glasses earpieces so that they have a proper "head" for spatialization. By doing that, you get a recording that PRECISELY gives you the directional cues as you heard them in the field on headphones, and with a little M/S tweaking, you can translate that nicely to normal stereo. https://www.microphonemadness.com/mm-bsm-6-micro-binaural-stereo-microphones-w-shure-premium-holding-clips.html are the very model...I got mine in 2005, and the design works so well it's still unchanged 15+ years later! Even if you get a different field recorder, I'd still look into those mics if I were you...