I think they are fantastic, I have the tranquil fanless case on mine and love it. Its bigger than the nuc case obviously as it needs to cool it but also has a slot for a 2.5" drive.
TV: Sony 65" A1E Surround: Yamaha RXA-3050 + ORB Audio Mod2 7.1.2 + SVS SB12-NSD Sub Processor: Darbee + DVDO iScan Mini Players: HDI Dune Solo4K + Apple TV4K + Vu+ Ultimo 4K NAS: Qnap TVS 871 Pro i7 16GB Ram 10GBe