I used to be a fan of Qnap, but Synology is better, especially in the interface and support and abilities in terms of built in support and additional apps available.

Are you going to take advantage of the 2 M.2 SSD slots in the 920+? I've been considering buying a new NAS for sing time and this one is a good spec for the price, so in very interested in how you get on with it as I might buy one myself.