SMN or NIN

Hi , i am looking for simple Dps class to use with good/decent damage , i tried MNK and DRG before and i found their rotations confusing for me specially the MNK ,
definitely no BLM for the mobility and the rotations and BRD/MCN never liked so much those classes , so i was thinking in NIN and SMN , i am currently leveling my NIN (lvl 52 atm) and SMN i dont know about that class , thats why i need some advices , i already have SCH/SMN in lvl 60 with almost capped in Eso and ready :D .Thanks in advance and sorry for my english, is not my main language.

easy < difficult

Melee:
MNK < DRG < NIN
Mage:
BLM < SMN

Imo (using same marking as above)

mnk < drg < nin

Brd < smn < blm < mch

Overall all classes
Mnk < brd < drg < nin < smn < blm < mch

But then again, I haven't got nin at 60 so it could get easier with the new skills (though they've added positionals for nin since I last played so that might make it harder.)

For the main thing on SMN, if you choose to keep that, your main focus will be on your variables. These are the DOTs, the pet, the aethertrail stacks, aetherflow stacks, and dreadwyrm. alongside other buffs like raging strikes, rouse and spur. If you feel managing variables would be easier than the strict rotation of BLM then SMN would be a good choice. Unfortunately I don't have an opinion on NIN as of yet as I haven't leveled it all the way up. Working on it though.