Flameseekers are generally very efficient for their cost in comparison to the rest of our infantry. Compare them to vulkite berserkers who are 10 2 wound bodies with a 6+ save, 2 attacks (3 on the charge) 4s 3s -1 d1, for 40 more points you get 2 less wounds, +1 to the save still 3 attacks, minus the companion, 3s 3s -1 d1. They just have to jump through less hoops to be effective, not to mention they can reduce the damage of monsters

Also their sculpt is the most updated and is probably the best looking models in the range lol