For me the best 90's dance tunes where at the start of that decade with groups like Altern 8, Dream frequency, 808 state, Terrorize, Bizzare Inc, K-Klass, FPI Project and The Prodigy. And with DJ's like Micky Finn, Ellis Dee, Matt Bell, Easygroove, Joey Beltram, DJ Nipper, DJ Welly, DJ XTC, Daz Willott, DJ Seduction, Stu Allan, Carl Cox, Grooverider, Sasha, Top Buzz and Slipmatt & Lime aka SL2.
Dance music became too commercial for me and imo was crap after 1996, although I do think it made a bit of a come back in 1999 with some very nice trance tunes.