Tracks that really made me sit up and take notice were The Advent - Ano Domini, Vainqueur - Lyot (Maurizio Mix), Paul Hazel - Go, Acid Scout - Balance (though I didn't know their names at the time). When techno stopped appearing at hardcore nights I lost touch with what was going on, then in 98 one of my friends told me to come round and listen to these records he'd bought by a guy called Adam Beyer.
I'll also never forget what I felt with the first acid techno record I heard, which was Secret Hero - Build Up The Pressure. It was all I could to stop myself jumping around the shop. Got quite bored with 303s in the end though ;)