Schiit Yggdrasil Less is More, is it a quality dac ?

Bottom line compared to DACs in its price range. YES. 

yes the yggy does not embarrass itself in its price class in terms of sound and build quality - it does have a certain sound signature and some ergonomic foibles

yes.  I'd pick it over either of the ones you mentioned.

Personally, the DACs with the Schiit Multibit filters were the first (and still only ones I’ve heard) that sounded like music to me. I have a multibit Bifrost and a Yggy.

They have also written their own USB code and implemented it in the DACs (Unison) and by the end of the first quarter are expected to release their "Urd" (~$1,200; USB-C only), which is a Cd player, but also has a USB pass through port and will provide their implementation of the USB code on the send side, to the Schitt DACs. They say it makes quite a difference. Fingers crossed it does.

i personally liked the pontus more than the gumby and yggy... pontus has a warmer tone, more solid bass, with equal air and imaging ... other excellent option in the lower/middle dac segment is one of grannyring's modded mhdt tube buffered dacs (orchid, etc.)

just shows that one really needs to try these in their own system to determine what works best given individual room, system and preferences