FrankSaw,
Ive owned about 100 1970's receivers...still have 30-40 laying around collecting dust. (Mostly Pioneer). The Pioneer 9100 Integrated with a SG9800 EQ is an excellent combo. It will handily beat the SX-1980,1250,1010 TOTL Models.
For regular receivers: SANYO JCX 2900, ONKYO 8500, SHERWOOD 9910. These will cost 1/2 the Price of Pioneer/Marantz receivers of comparable wattage...and SMOKE them in Detail. The Kenwood KR9600 is another excellent choice but more expensive than the above. (Still better than any Marantz/Pioneer)
As a whole I would say SANSUI is the best if you need to pick 1 brand...but your going to pay for them. A "Eight Deluxe" would be an excellent affordable choice. The "9000" series are awesome but very expensive.
Luxman's are awesome for detail...the best actually...but too laid back for Rock N Roll.
Stay Clear of Yamaha "Natural Sound", Sony, Tandberg