HI, im brand new to this forum, but I have a question for those "in the know". I currently own the Audio Technica ATH A700 headphones, and to me they sound excellent. Of course I bought them years ago, long before I knew what to look for in headphones, and figured they must be good if they were expensive. Nowadays, I'm doing months of research to decide what headphones I will get next. The new set has to be closed back, and not leak sound much. The A700s are my reference point, as they have the minimal sound leakage I am looking for. I am looking at getting either the AKG K550, which I understand have very good isolation, or the Denon D5000 which I've heard have poor isolation and leak a lot of sound. The D5000s would be barely in my price range at $430, while the AKGs are very much within my price range, and I could probably even afford the Fiio E9 with them. I am really wanting the superior sounding Denons, but my main concern is the sound leakage, which I would need to be at a minimum, which is why I'm strongly considering the K550s. I think the ATH A700s sound excellent, so I'm also wondering if Ill notice a big difference in the sound quality between these sets.
So I guess my 4 basic questions are:
How much sound does the D5000s leak? My office is right outside my children's room, and if I were to do some late night listening to loud music, would it disturb them?
How does the sound leakage on the D5000s compare to sound leakage on the A700s?
How does the AKG K550s stack up to either set (the A700s or D5000s)?
Is there a big step up in the sound quality between the A700s vs. K550s vs. D5000s?
Thanks so much for any input. I'm looking to purchase in the next few days.