Ryan Stevenson using Sabian's Quiet Tone practice cymbals
A great review of Sabian's Quiet Tone practice cymbals made of stainless steel.
Zildjian L80 low volume practice cymbals
Here's something to go along with Remo's Silentstroke drumheads. These are the Zildjian L80 low volume cymbals. A standard-size set of these will run you about $300 but at least then you could play in your tiny NYC apartment without bothering your next door neighbors.