Just my .02 cents
I don't have a tuner but digital satellite. The sound is good however after listening for awhile it becomes irritable for which I don't consciously have an explanation other than compression. It is more noticeable on TV's with just the sound coming out of tiny speakers. After I become irritable I end up muting the sound and I'm okay again.
as many know, i am a tuna-holic.   

  while i don't own bryston gear, i can say that, w/o a doubt, if you have good non-commercial stations in your locale, that play music you like, the sound you can get, w/a quality fm receiver, is fantastic.  easily comparable w/the finest digital and analog playback systems.
my experience w/satellite radio mirrors yours, mag - i find it completely unlistenable, even for a minute, if i actually try to sit in the "sweet spot" and listen.  and, even as background music, i get a headache after a short time.  20-30 minutes is all it takes.
over the past fifteen years, i have owned over 100 tunas; i presently have about forty...   
  
 but, i do a lot of fm listening, not yust as background music.  easily 90% of the time my stereo is on, i am listening to fm.  i am fortunate that there's a few local public stations in my area that play music i really like, and the broadcast quality is wery good.
regarding specific tunas, i am quite opinionated about them.  i believe all the mac s/s tunas are extremely over-rated; the two i owned - mr77 and mr74 - are considered by most tuna fans as mac's best sounding tunas ever made.  (even richard modaferri, designer of the mr78, has said a well sorted mr77 will sound better than the mr78; the mr78 excels at dx'ing, not sonics.)  i must say that the mr77/74 easily rank in the bottom five of all the tunas i have owned, sonically speaking.  flat 2-d soundstaging, not the best soundstage width, nor the last word in dynamics and extension.  all in all, a plain boring sound.  the mac tubers 
do sound wery fine, but they are still exceeded by several much less expensive tunas, both tube & s/s, so they are not wery cost effective.  as for the m-d tunas, the are also extremely over-rated, imo.  their most expensive tunas are decent, but 
way over-priced, equaled or surpassed, imo, by many $200-$800 wintage tunas.  the ft101a i used for six months was down at the bottom of the list, along w/the macs, sonically.  the tandberg 3001a, (i owned two, one completely refurb'd, and upgraded w/better p/s caps), was a nice sound, for sure, but equaled sonically by many, (a couple you can get for <$100), surpassed by many more, and extremely unreliable.
the fmtunerinfo.com site and its sister yahoo tuna forum site are a wealth of info for those wanting to delve into fm sound.  which i highly recommend, of course!   

some links:
http://fmtunerinfo.com/http://tech.groups.yahoo.com/group/FMtuners/http://www.radio-locator.com/doug s.,
so many tunas, so little time...