Melee Mewtwo actually raises a very valid point. tbh if i were to use Deo-D right now, i would use enough Speed evs to outspeed Adamant CB Kyurem-B, which could otherwise 2HKO Deo-D with Outrage. Anything else between 306 and 290 Speed is handled the same way as if you used max Speed, even if you get outsped.
Let's see what i mean in details:
Neutral base 100s that sit at 299 Speed
Only Modest Volcarona belongs in this group, which can be taken care of by Thunder-Wave.
Positive base 86s that sit at 298 Speed
Only Timid Rotom-W belongs to this group, which is always Scarf so no difference here.
Neutral base 98s that sit at 296 Speed
Only Modest Hydreigon belongs to this group, which is rare as fuck, as it is outclassed by LO Hydreigon, so it doesn't really matter.
Neutral base 97s that sit at 295 Speed
Only Adamant Haxorus belongs to this groupd, which is rare as fuck, as it is outclassed by CB Kyurem-B.
And that's it. You could further drop the speed to 285, which allows you to outspeed Jolly Mamo, which could otherwise 2HKO with EQ, if Adamant Kyurem-B is of no concern. I don't know where those evs would be better spend on, but i am pretty sure tha 64 evs are going to have some use, and i would rather use them, than outspeed some irrelevant mons.
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