Long time lurker, first time poster here. I'm relatively new to the world of quality headphones, and right now own a pair of Grado SR60is, which I added a Beyerdynamics headband and reverse quarter modded Sennheiser pads. I really like them, and recently received a $50 gift card to Musician's Friend.
I will primarily be listening on my laptop, which is just a budget Toshiba with stock soundcard, or through an iPod. The majority of my music is either low quality mp3 downloads, or the highest quality that I could rip a cd with on iTunes.
I listen to a lot of classic and alternative rock, with some jazz and country thrown in here and there, as well as watching movies on Netflix. I'm not looking for a tone of bass, just something with clean mids and highs. Since the majority of my listening will be at home, I don't mind if they leak sound.
I've been looking at the following, which don't really seem that similar:
Koss Portapro for $50
AKG K99 for $55
AKG K240 MKII for $75
It sounds like the 240s need an amp to really shine, and I wouldn't mind paying a bit extra for them if it meant a considerable step up in sound quality. I'm not really sure if I'm going to notice a huge difference in the "studio" type headphones, but was hoping someone could provide some guidance.
Sorry this is so long winded, but I would really appreciate some suggestions. There's a ton of useful information around here, and I hope to contribute some myself once I get my feet wet.