Well, I switched from 70D to 701D and I love my decision. Hoever I paid half the retail price for it.
I like the casing, which is a Al/Mg casting, and parts can be replaced easily. Screen has a nice feature, never turning the backlight off totally. It operates in two modes so you can actually see what the thing is recording even during the night, so you dont have to press anything and get pops and clicks into the recording.
Easier to match levels now as faders levels are displayed on the screen. Or assign them to a group and tweak one only.
Can record infrasonic to about 3-4Hz. Flat @ 10Hz.
The menu is a long list, a bit dumb tho`.