Best to me are...
AKG K240 Sextett
Only if you can find a pair for under $100. Sounds better than the K240 Studio, but much harder to drive.
AKG K240 Studio
I think this is a good alternative to the HD-555 and it's just as comfortable. It even makes a good gaming headphone!
Koss Pro DJ 100
Basically my favorite headphone under $200 that's closed. It has very good, forward sounding mids, quite a lot of bass, but not quite bass heavy. Level of detail is very high, but has very slightly rolled off highs. Also gets my vote as one of the better budget closed gaming headphones. They're also only $80! I even prefer them to the SRH-840, M50, K240, ESW9, HFI-680 and many others.The only like I might like better overall is the HD-598 (under $200).
Maxell DHP-II is also a pretty good headphone and I highly suggest it. It's just very fragile, but it's only $30!!
Shure SRH-440 also isn't bad. It's quite bright to me though. For the price, it's a good deal. Comfort isn't that good.