I have actually always pulled off the floor as well. When I first started training I did rack pulls, and when I stopped doing them my deadlift started taking off (I am a raw lifter).
I tend to vary the reps as well, and will only hit 90%+ once or twice in a 6 week training cycle.
Class I Total @ 198: 525/335/600 (1460)
"No citizen has the right to be an amateur in the matter of physical training.... What a disgrace it is for a man to grow old without ever seeing the beauty and strength of which his body is capable."