There can be only ' ONE ' stereo system...Sansui!!
Back in the day (1970-1972) Sansuis were the system of choice by most folks. Most of the guys gravitated toward Sansuis. It was like a love affair. Sui's just rocked, sounded great, and looked super with the green lit up glass on like the receivers. Think they invented 'that look'. That's what I read anyway, like on the model 5000 receiver.
But...Pioneer amps were super well respected and tons of guys bought them. Nice equipment!! And the Pioneer CS speaker systems sounded real good too. They sounded great. Pioneer sold a ton of speakers to the military guys. Sansui speakers sold great too but I think Pioneer may have edged them out on sales, but not sure.
Others in the same 'highly desired' Japanese club: Luxman, Kenwood, Nikkor, and Yamaha.
Yamaha had a real following with hard core stereo guys. They loved thier Yahamas. They were really fine amps. And cranked loud. I remember the Yamahas well, they really put out a fine sound.
But by in large, most folks went with Sansui. The just 'always sounded just right' and also looked great. And again, it was like a Sansui love affair during that time period.
It was all personal preference really. Want something not many others had...get Nikkor, which was also really nice equipment! And Nikkor had a really different look which was alluring and exotic. Luxman was quality, but rarer to get it seems. Maybe they were just more expensive which may be why guys didn't get so many like Sansui, Pioneer and Kenwood (Kenwood to a lesser degree). Kenwood was really good too. You really couldn't go wrong with any of them. But Sansui did have that 'Sansui Sound' edge. The "Sound of Sansui". The SP-200s and SP-2000s were very well liked speaker systems and did sound great. But the Pioneer speakers may have sold more. Maybe because guys would buy an amp from one company, a tape deck from another, TT from another...then get Pioneer speakers. Pioneer speakers did rock. JBL was the best but was out of reach pricewise for most military personnel when buying complete componet systems. JBL was the best, of course.
They all were quality builds and very reliable. Pioneer made some great looking, ok, outstanding looking wooden cabinets for their amps. Really sharp lookin. Just beautiful. You have to remember the 'look of wood' was really 'in vogue' then. The fine furnature look was in style. I don't think Yamaha and Nikkor ever went that route, none that I've seen anyway. They just had black and silver colored metal amps, etc.
Side note: Teak made the 7 inch Reel to Reels, everyone loved Teak R to Rs. Sansui also made really nice 7 inch R to Rs. AND
Dual TTs were 'absolutely all the rage'. I remember...that Shure and Pickering were the desired carts. I'm sure Ortofon was a big seller to but I can't really remember all that well about Ortofon. Maybe they weren't as availiable, or as well known, as Shure and Pickering. Personally...I love Ortofons. The guys just really 'knew and liked' Shure and Pickering carts.
That's the way it was with all the military guys throughout the Asian area anyway, from Japan to Hong Kong to Subic to Viet Nam.
So which is better: Pioneer or Sansui??
It all depends on which one sounds best to you. And now-a-days, which one has held up the best with the test of time. If you not going to restore the amp, just pick the better sounding amp. If your going to restore the amp...SANSUI!!
Hope this helps.