I just listened to you guys talking about iMUSE and it was driving me crazy.
First, you totally didn't mention X-Wing and Tie Fighter. Those games were made a hundred times better by the use of iMUSE. You would be flying around a perfectly banal level, then all of a sudden the music would swell to announce a new threat entering the system. It was really awesome and if you only played the Windows 95 / CD-ROM version of the game you missed out on it.
Second, preferring FM synthesis over General MIDI is totally goofy. It sounds like you never actually heard it, or bought the wrong GM board. I had a MediaVision Pro Audio Spectrum 16 and it was a HUGE improvement over the sad bleeps and bloops of the SoundBlaster card it replaced. Unfortunately, I had to retire the card prematurely because it had a built-in SCSI adapter that Windows XP wouldn't play nice with.
After the PAS16 I had an Ensoniq card and they were constantly releasing new patches for it that put FM synthesis to shame. If you remember Ensoniq as the guys behind the crappy sound cards you were getting free with your Gateways, then yeah ... you had the wrong card. You had to spend a couple hundred to get the good stuff.
Anyway, just wanted to throw my two cents in.