Maybe a little off topic, and/or over budget, but if you have have external mics that you like, and like the idea of a simple high quality stand alone recorder that you can use with with or or without batteries, the Sound Devices MixPre series is pretty impressive. I'm very seriously considering buying a MixPre3 ii
https://www.sounddevices.com/product/mixpre-3-ii/ I have a friend with the first generation of the MixPre, and I've borrowed it to play around with and was super impressed with it's quality and simplicity. But no internal mics and probably twice the price of the Zoom stuff.