Hi all, I'm new to the forum and even though I've been interested in good sound for a few years, I haven't actually researched sound until a couple days ago. I recently purchased a pair of QC15s and after lurking around on head-fi for a little while I found that mostly everybody finds Bose to be overpriced for it's sound quality. As a result, I'm looking for alternatives (My Bose is still shipping and I'm already thinking of selling them!) I'm going to be flying for 8 hours roughly 4-8 times a year over the next four years for college, so I figured the QC15's would be a good option. I want as much sound isolation as possible so I can enjoy silence in a dorm-room setting as well as on an airplane. The main reason I bought the headphones were cause they're #1 in the c-net category for noise cancelling headphones (http://reviews.cnet.com/best-noise-cancelling-headphones/ )and they have pretty good resale value. I've also done some research on Sennheiser's PXC 450 but as far as I read they don't cancel sound as well as the QC 15's. I've also been looking at the Denon AH-D2000 but they don't have noise cancellation so I didn't give it much thought.. I'm also going to be purchasing another pair of in-ear buds for walking around campus. I don't want to spend more than $80 on the buds. I was thinking of picking up the Klipsch S4s (also cause they got high cnet ratings) but I'm still not completely sure. Right now I'm using Shure e2cs but they're breaking down as the wiring inside the cable disconnects when I curl the wire in certain positions. So all in all I'm looking for: 1) Full-size, around-ear headphones with noise cancellation and good sound for around under $300 and 2) In-Ear Buds with good sound for under $80. Could you guys give me some insight and suggestions on this issue? Thanks!