Late 2007-Mid 2008 $VIX 17.0-31
Mid 2008-2009 Bottom 28.5-80.9 with the majority in the 35-50 range. 

Need $VIX under 20 to sustain a bull market. 
Need $SPX not to fall 3%+ in a day, let alone 4% for a bull market. 
This time different? Maybe.