Blunt or Thunderbolt?

So unfortunately the old profile crank I have has developed a wobble and I decided I no longer want to use it. Which one of these cranks would be best for my fit shortcut v2? I hear the thunderbolts can be a pain but are hands down some of the best on the market. While the blunt cranks have the 24mm spindle and I wouldn’t need a hat washer with my sprocket, (Sunday sabretooth) I’m also not really sure what size to get and why. I’d like to go with one or the other but don’t want to fool with the thunderbolts if there that much of a pain. My old profile cranks didn’t give me the clearance I wanted between the chain stays along with trying to have the chain in line with the driver.