QUOTE(f4tal @ Aug 24 2017, 15:51)

Same opinion here. It is better to have bunch of low-powered monsters (even if they would kill noone) then 2 high-powered monsters.
The problem is defining high-powered monsters.
Even if you bring a monster to PL1000 the win will still be 0.
Even PL1100 rarely gets a win (PL1200+ or PL1300+ is where the monsters start appearing more often and get more wins) so 100 crystal packs = no win, 200 crystal packs = you start getting some wins.
And when you need 6+M the result is that high-level monsters are not cost efficient, they repay after years and years.
A PL25 monster has next to 0 investment and is profitable from the start.