HD still isn't too bad. It's kind of a toss-up as to whether it's better or worse than good analog FM. Good reception with HD gives you far less noise than analog FM, much better bass, and more dynamic range (subject to the station's use of compressor/limiters). Top-notch analog FM is probably better than HD radio, but there's only one station in my market that I'd classify as top-notch for analog FM.
I did the mod so I can force analog reception. I think I get better sound from some stations when I select analog.
Overall I am extremely pleased with this tuner. I feel that without any mods at all it is better than probably 99% of the tuners out there. (Some of the mods people suggest are not useful IMO.) The little Sony probably gets about as much out of FM as it's possible to get.
you say it's a toss-up as to whether it's better or worse than good analog fm. then, you say "i think i get better sound from some stations when I select analog." which is it?

personally, i have found the xdr-f1hd to sound better on analog than on hd, and that its reception capability is not better on hd - it is as good on non-hd as on hd stations.
re: the ultimate sonic qualities of the xdr-f1hd, w/o mods or a tube buffer, for serious listening, i find it to be fatiguing after a short time, but ok for background music. (i can't listen to sirius/xm even for background, for more than 15-30 minutes, w/o getting a headache.) w/a tube buffer, the xdr-f1hd becomes eminently listenable for longer periods, tho not as good as better analog tuna. i haven't tried one w/mods yet.
ymmv,
doug s.