10GBaseT is the wrong solution, period. As you've found out it runs hot (somehow I doubt all the fanless consumer trinkets are going to last very long). Not that Ubiquiti is a good example – even with their 1G kit they had issues with thermal management. Both the ER-X and ER-L ran hot enough to cook themselves (especially the early ones with the tiny SD cards). True to form my ER-Xs get flakey when it gets slightly warm. Fiber is the way forward and hopefully getting multi-gig connections to the home will start to bring the pricing on some of that kit down to reasonable levels.
FWIW I've also got Sonic's 10G offering and yeah it works well enough. Something is causing intermittent problems that I've not had with their ADSL or 1G fiber offerings – I'm starting to suspect the 1G TP-Link switch they tossed in. For now I just live with the periodic interruptions.
Edit: Certainly I'm not planning to upgrade any of my gear to 10G as I simply don't need the bandwidth and Sonic's offerings are really geared towards web browsing more than anything.