You've come to the right place.
I try to strike a balance between male & female vocalists (with the odd instrumental). I consider these all to be modern synth classics:
Female Vocals:
Cylob - Living in the 1980's
Sampler - The Greatest Hit
Alpinestars - Vital Love Disciple
W.I.T. - Hold Me Touch Me
Dot Allison - Substance (Felix Da Housecat Remix)
Ladytron - Another Breakfast With You
Ladytron - This Is Our Sound
Swayzak - State of Grace
The Parallax Corporation - Crocodiles in the Sky
FC Kahuna - Machine Says Yes
Water Lilly & St Plomp - Shake a Leg
Miss Kittin & the Hacker - 1982
Hong Kong Counterfeit - Metal Disco (Legowelt Remix)
Male Vocals:
Waldorf - Fashionist
Waldorf - You're My Disco
Legowelt - Sturmvogel
DMX Krew - Good Time Girl
DMX Krew - Street Boys
DMX Krew - Body Rock
Egoexpress - Weiter (With Dirk Lotzow)
Martini Bros - Dance Like It Is OK
Swayzak - Buffalo Seven
Instrumental:
Ellen Allien - Open
Legowelt - Fizzcaraldo