Primary and Secondary Kin SB and perf shifter +end

What'd like to know is in the 30ft radius, 255 max target 50% end rate buff for corrs(dunno what the defender value is). Which enhancer will have what overall effect assuming it will only get 1 slot?

-the perf shifter 20% flat chance io
-the post nerf perf shifter ppm sbe
and for giggles
-the perf shifter sbe at the original 3ppm for 20% flat rate IOs formula

How does that compare to a plain lvl 50 42.4% IO? A plain lvl 50 should make the power boost end recovery by 71.2% if i did the math right

I don't have any math to tell you that the proc (any version) will pale in comparison to the EndMod enhancement.

The EndMod enhancement will boost the recovery of the power for its full duration. The proc will give ONE CHANCE to get 10 Endurance at the time of casting. Even a -3 TO will enhance the power enough that it will add more than 10 End of recovery over the 2 minute duration, and the enhancement is guaranteed, while the proc is not.

The proc is better in Stamina because Stamina activates on you repeatedly, and the proc has a chance to fire once per activation (subject to a maximum of once per 10 seconds). Speed Boost, on the other hand, only activates once per casting. The only way it would even possibly become worthwhile to slot the proc would be if you were literally doing nothing but casting Speed Boost every time it recharged, and that would be a foolish waste of both your Endurance and your time that could be spent using other powers.

I don't think the proc will affect the target anyhow, rather it will give the 10 end to you, like most procs do. Which is rather useless, a Kin should have no end problems.