A well designed streamer often has a great deal less noise than a PC or laptop. The difference can be staggering. I went from using a MacBook Air and Mac mini to an Innuos Zen MK3 and it convinced me to never again let a computer near my hifi system.
Interestingly it was my friends Project Stream Box 2 that started me down the streamer path. It bested my computer sources and expensive CD transport. The same day another friend brought over his Hugo2/2Go (I was using Qutest at the time so the same DAC) and it was an even bigger difference.
I guess its not so much about being a streamer (playing a continuous transported music stream over IP network) but having your player isolated and less noise polluted as possible before sending the digital audio signal into Mscaler/DAC.
But convinience plays a big role too.
I went the DIY route.. and used a small thinclient PC cause its simple circuit (for a pc) No fast GPU, chipsets or multi RAM modules.
External PSU, fanless, stripped down win7 embedded
All non essential background services disabled. Optical network (SFP is powered on the same internal groundplane as pc) built a DDC in it also on pc own 5v with toslink out.
Music locally stored or reading from local NAS using SMB (= tcp data, not audio streaming)
Running Foobar2k or Jriver media center on wasapi, using phone/tablet only as controller
This costed under €100 but took some time to setup. I had great fun making it.
I had the idea of building this in a Choral housing..