I've looked into a bunch of streamers earlier this year. For reasons I won't go into beyond what I already wrote in the occasional post in this tread (tl;dr: the cheapest hardware you could think of, little to no shielding, questionable privacy policies, horrendously bad software that you're forced to use), most of them I wouldn't let anywhere near my home, much less any of my audio chains.
The best "value for money" streamer you can get is the cheapest Mac mini. That gets you the highest quality hardware and the highest flexibility in terms of software, it can be used head-less, draws very little power, doesn't look bad, and the thing is dead quiet when used as a streamer. The only caveat is that you need to run something like Roon on it, meaning some playback software that bypasses macOS' own audio pipeline so that your tracks get sent out the USB port without any forced resampling.
An iPad is OK, but you don't get the same flexibility in software and you'd have to keep it plugged in for a long time, which will eventually destroy the battery. (It'll bloat up on you after about a year and, if ignored for too long, could rupture.) But it does stream bit-perfect, so it's got that going fot it.
Forget about Android tablets and phones, most of them can't stream your tracks without resampling, period. Not for love or money.
A home-brewed Pi would be an acceptable alternative, if (and that's a big if!) you know how to set it up exactly the way you need instead of having to rely on software packages that some third party cobbled together for you.