Both sides of this issue have merit. Most times, my preference is to listen in surround. Yet, I have repurchased most titles that I originally purchased in Quad. Quad was my only copy of the majority of those until the advent of CD. Many who were used to listening to a stereo copy had revelations upon hearing the surround mix. Many of my experiences were opposite. Years after the original release, I discovered differences in the 2 ch mix.
Owning a 2 ch copy, especially higher fidelity (1/2 speed LP, Gold Disc. 2ch SACD, dbx LP, etc.) is a great way to further explore classic albums. Just as surround mixes reveal things never before heard, often audiophile releases do as well. Perhaps my point could best be made with 2ch dbx encoded LP's of Larry Coryell/Eleventh House and Loggins & Messina's Full Sail. Although both Quad's are mixed well and I cherish them, it's hard to ignore the completely silent background and wider dynamic range of the dbx LP's.
Although CD-4 is my favorite Quad LP format, I've always heard the abbreviated high end, and it's annoying. That's much less evident today at my advanced age. I own over 200 Q8's, yet I rarely play them. (Controversy warning): Q8's sound like crap! Unless the Quad mix is absolutely awesome, it's difficult to listen to low-fi when spectacular imaging, wider frequency response, no wow/flutter, and better s/n ratio await. Granted, not everyone has a system that has 37 components and costs tens of thousands. A $200 Quad compact won't reveal how much better the 1/2 speed LP sounds over a Q8.
I've rebought most of those Q8's on Quad LP's, audiophile formats and CD's. I prefer to spin an SQ LP over a Q8, despite the limitations of matrix. The improvement in fidelity is enormous. I've always believed that most Q8's have better fidelity than their 2 ch 8-track counterparts. And there are some wonderful Q8 conversions out there. Still, those software limitations are painfully obvious. Unless the mix is spectacular, I'd prefer a 2ch audiophile format to a Q8. If the mix is good, I do prefer Quad LP's to audiophile pressings.
Give me a great surround mix and great fidelity like advanced res., and I couldn't be happier. I have sought them out for over forty years. Beyond that, sadly, it becomes a tradeoff. With today's digital technology, it need not be a tradeoff. We need more 5.1 advanced res. discs.
Sorry to hijack this thread. IMHO, all this needed to be said.
I'd refuse to listen to Stampede in stereo. I'm used to hearing it in Quad.