Monte's best perk besides the melee cooldown is the 56 bullet clip. It's great for suppression and will often net you a double down if enemies are close together. That said it is not as accurate as SUROS. Regardless, it's my favorite gun so far next to Ice breaker and is a monster in PvE.

Don't play on PS3/4 so us Xbox peasants can't get Monte Carlo yet ;-; However from experience I would say Hard Light is one of the best auto rifles in the game and will deffidently out shoot the Suros at close and even medium range if you can stay on target. I've looked at Monte Carlo which seems to be more suited for close range as the special likely allows you to quickly regen your meeles for those pesky shotgun whores. Didn't really look to far into it aside from that.

Suros is a much better all rounder with good close to medium combat abilities and arguably the best med-long range ar in the game. Hard light is a more close to mid range weapon that is more like a sub machine gun. Arguably the best close range weapon in the game alongside Atheons Epilogue. Monte carlo is a PS exclusive but I have not heard that good things about it. There are plenty of other legendary weapons that outclass it so it isn't worth your exotic slot.

Here is a prediction for your lucky night, most these guys will hate you for coming up....seems to be the trend. Good job tho for sure!! I hope this falls under the "earned" category :D

level them up to the last free upgrade, test them out, decide for yourself.