Pros: Lightweight, Cheap, Lifetime Warranty, Fun, Value, Rugged, Open-back
Cons: Takes 5 minutes to properly adjust the earclips
If you don't own a pair, BUY THEM! Seriously, their that good.
I prefer them to my DT990's, hands down. Nuff Said.
If that still doesn't convince you, they're super comfortable once you adjust them properly, sound fantastic, cost $20, and can be modded for fun.
The ear clips are pretty durable. I've snapped them off the drivers multiple times to adjust the clips and the connection point is still in perfect condition without any stress marks that usually happen in plastic.
I might have limited experience, but I can't imagine a higher value.