Keep an old CA master over an upgraded CA?

[Halsy01]

<div>Just hit 38 and got Merciless Stomp, but took Master II for crash which definitely is more powerful than MS atm. Should I keep using crash untill I upgrade MS ?</div><div> </div>

[Cornbread Muffin]

<div></div>Yes.

[Colossaltitan]

<div>Yeah, until you can get new one upgraded (Adept1 will be better than old M1, if not its a bug).Their is no real umm, scaling down? of skills.  Aka, the skill won't really have a noticable resist rate just because its an old one. even on new mobs.</div>