Nice idea for a wide-ranging topic!

Well from Alfasound I'd be incestuous and pick 'Trent 8' - when we reached a high of superb Alan Fawkes tracks, tight musicians, and Steve imported (and mixed) 3 Dallas singers in with Alfa regulars Steve and Sheila for us.

We used THE Jackie Dickson on lead and broke all the rules mixing her way above the other singers.... here she is in a 4 or 5 layered vocal from Trent 6 (I think!)

https://soundcloud.com/len-groat/radio-trent-jingle-1985

From PAMS I'd have to go for Series 28 'Happiness Is' - THE favourite of Neil (Dave Dennis on Big L / Radio Trent PC from '77 to '78) Spence who had them at UBN, and I ordered them as a main part of the first GEM package in 1988, AND recently had a re-sing done for our Stephen Wells!

https://soundcloud.com/len-groat/s-c-p-sono

From William B. Tanner the 'Now Sound' - as it has THAT 'Spanky & Our Gang' rip-off sung for Jimmy Young...

https://soundcloud.com/len-groat/pepper-tanner-now-sound-radio

https://soundcloud.com/len-groat/pepper-tanner-now-sound-len

From TM I HAVE to go for the incredible re-sing of the Chicago song....

https://soundcloud.com/len-groat/len-groat-radio-like-it-used-1

And from JAM? Impossible to choose - but if pushed I'd go for Special Touch (huge variety of track styles and lyric space!) I've got a LOT of this package for Solid Gold GEM.

https://soundcloud.com/len-groat/summerburt-vocal

https://soundcloud.com/len-groat/summerburt-sono

............. and Omni Trax, Do It Again, Magic Music, Right Direction, the KYGO packages (great logo melody and harmonies), Top News, Q Cuts, Dimension 2, Back Seat Music, Priority 1 .....

https://soundcloud.com/len-groat/gem-world-wide-news

https://soundcloud.com/len-groat/50-d2-track-2

Love it!! Thanks Len!

Easy.............. selected cuts from PAMS Series 33 "Fun Vibrations"

...still my all time favorite.