I have a 75# bow and my release varies with how the shot 'feels', sometimes this is means a snap release, sometimes its up to a 2 second hold. Personally I tend to draw quickly and I think that reduces your conscious impute interfering with your subconscious calculations, but to each his own. Now when I'm shooting at a moving target my releases are almost always snap releases because the bow, as it is being drawn, is already tracking the target and that movement inherently steadies your shot in a way that a simple draw on a static target cannot.
On a static target the bow is drawn and one is trying to minimize movement to keep tighter groups. Snap shooting on static targets involves the bow tracking as the bow is drawn from a point of aim at ones feet to where the upward movement to full draw coincides with the spot one intends to hit. My advice would be don't wait for any premeditated count, hold it until the release feels right, however long or short that count might be.