Well me personally i prefer to run with 550-560 but while im waiting on my choker and ring from coils (should have tonight) im running 553 skill speed or 572 skill speed or if really wanna go all out 491 skill speed and even with the 572 ss on dummy parse i can still reach my 2nd invigorate with using 3 fractures and constantly keeping tod up, in raid tho its even easier even more so with a ninja that 491 skill speed is very nice with a ninja and in turns like t13 while earthshakers are on me makes its very easy to keep gl 3 up.