Working in studios my whole life I've used a lot of headphones, and have owned a lot as well. These are terrible headphones all around. They are particularly bad for tracking because they don't sit snug against your ears, and so you get a lot of bleed as a result. When it comes to tracking, I'll sacrifice comfort over mix bleed any day. The SRH240A is really lacking in low end to my ears as well. I'm not a bass junkie either. I like a nice honest balanced headphone. The low end in these is a joke.
If you want really good tracking headphones in a similar price range I would recommend the Sennheiser HD205II. They sound way better, and they are super snug on your ears which is of course what you want for tracking.