Problems with the IFI Zen Stream.. What's a better Alternative?

I own two Zen Streams  and use them in different systems. I have used them for approximately two years. On the positive side they both deliver excellent sound quality. The problem is, as of the last few months, they both drop the network signal frequently for seconds to minutes. The red light comes on, then goes back to green. They are both running through ethernet cable, not wirelessly. After hours of trouble shooting, I have concluded that the problem is with the streamer, not something else. I suspect they might be failing due to the heat they generate. That's just a guess. 

My question is: what produces of similar or better sound quality with better reliability new or used? I would like to stay under $1,000.

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i have two zenstreams that i use to do simultaneous feeds for dac comparisons

i have had zero trouble with them, though I would add here that i am a roon user (with all other functionalities turned off), and i use a network feed via hardwire lan (not wifi)

they have worked without flaw for me in the way i have used them, and sound very very good

Why not try the Wiim Pro? It has a great software interface which works flawlessly for me. I have used Tidal but find myself very satisfied with the sound quality from Amazon Music for my needs. They recently added Roon capabilities as well. Best bang for the buck in my system. I have connected it via wi-fi of lan without any problems. They say it is bit perfect. I don't know if more expensive streamers are able to provide better sound. Wiim has constant software updates and plenty of support online.

I have a Zen stream and I’ve been planning to purchase another "higher end" streamer for months ... But I haven’t yet because it just sounds so good. I’ve certainly had some frustrating moments with it but once it settled into it’s role that it’s been in for the past year, it just has performed very well.

Obviously the frustrating things are the Volumio software which I don’t use, the customer support and the fact that in order to play Qobuz either Room or a Upnp must be employed.

I’ve been using the JPLAY app to stream Qobuz via my IFi Zen Stream with all the functions turned off except for Upnp in the Source Selection settings. It sounds amazing. (I also have it powered by a 12V linear supply from LHY). It’s also being fed ethernet from an EtherRegen which connects to my router.

Every now and then I have some hang-ups where I can’t send songs to the renderer and I have to close the app and re-open it.... but I think that issue is the JPLAY software rather than the Zen

Thanks to all for the suggestions of alternatives. I would welcome more suggestions to research. I’m also curious about the ultrarendu.

I appreciate the thoughts from those of you who suggest or imply that finding other solutions to preventing the drop offs by continued troubleshooting may work. I wish this was so as I used both Zen Streams in different locations with no problems for months and was thrilled with the quality, especially when adding a network switch and fiber optic cable. It is certainly possible that I missed something. However, after weeks of annoyance and attempts to fix the problem, I am ready to throw in the towel and just buy something that I have more confidence in.