Group 2 Monk Merits

Just a quick Question on the best Group 2 merits to use on MNK.

I've got 1 in Formless Strikes, and I was planning on putting 5 in Invigorate to help Chakra. After that Where should I invest them? I've heard Formless strikes is pointless to fully merit, though I've never fully understood why.

Is Mantra a good choice? I lack to see the times when I'd use it other than boss floors in Nyzul if someone forgot Body Boost, or perhaps to help a DRK Zerg.

Penance seems pretty good on Enemies you start with a Chi-blast on, But I'm not particularly sure If I'll get much use out of that.

Thanks :)

Penance 4. Formless is lackluster 2-5, mantra sucks

mmkay, Thanks ^^

lvl 1 formless strikes, only thing Ive used it for personally last 6 months is PLD in Royale Ramble KSNM. Dmg is low at lvl 1 but still allows you to hit for something and therefore build tp.
Lvl 5 Penance nice for all sorts mainly imo gear mobs chariots etc in salvage.
Lvl 4 Invigorate nice 10tick regen, I didnt opt for lvl 5 because a good deal of time not much of the added regen effect is needed.

Sorry for the necro but just hit mnk 90 yesterday and i wonder if anything changed in group 2 merits with abyssea?

Not really.

0-1 Formless Strikes
4-5 Invigorate
4-5 Penance

Wouldn't even consider Mantra.

Yeah, nothing new or changed. I would say cap Penance- but I guess mathematically that MIGHT the the only thing to change, what with the effects of agility and new nin spells. But still, there's nothing with which to replace it, and less mob tp gain the better IS a pretty good rule. Idk.

I did 1 formless strikes, capped penance, and the rest in invigorate.