Abyss run or Suicide Masteries?

So I have some really good suicide friendly champs (6* Capmovie, 5* capmovie, claire voyant, colossus, omega red, mysterio, etc) and I have enough units for either an abyss run or unlocking suicides, but idk which I should do since i got those units from July 4th deals and it takes me a long time to grind back 4k units cz I get bored of arena. So shoot and lemme know which is best.
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Suicides I don't find fun at all. Recoil just sucks.
Especially I hate Recoil, which limit your usage of specials.