I'm a warlock but I don't use firebolt grenades. I can honestly say I haven't used them at all since house of wolves dropped. I prefer solar for 90% of the activities I jump in. If I am dealing with a team of sweaties in the crucible I use fusion grenades. But! I am going to continue defending the firebolts. The only reason why is when bungie nerfs the DoT. It'll effect Viking funeral severely. Like I said solar grenades are my go to. But they also have a burn. The only way I'll agree with these posts is if they don't ruin the burn. I always said double the burn damage, and half the amount of time one is taking burn damage. Example: say after the initial hit, you take 7 burn damage per second for six seconds. It should be you take 14 burn damage per second for three seconds. This doesn't ruin the burn or grenade. A large amount of the complaints about these grenades is how long they keep you out of a fight or forced behind cover. With less time you can come out from cover and kill the warlock. But still keeping the effectiveness of the firebolt grenades without ruining the burn.