The pads have just enough room for my ears, but not much to spare, but the comfort is actually pretty darn good. I actually have worn them for longer than I typically do and while you do get a little warm with them on, it seems a reasonable price to pay for the quality of the P7. I wish I still had my H7 to directly compare, for sure the h7 is a little more comfortable, and going by memory I think the bass was slightly cleaner, but not as impactful. It really depends on what you are looking for, the P7 is the more exciting signature and I think it has a slight edge in instrument separation which may explain how it can feel more exciting. The power difference is certainly significant, and that was my only complaint with the H7, with older material I always wanted more volume, and even sometimes with newer material I could have used just a little more gas. That said the H7 is simply a fantastic headphone and if comfort is a big concern you can't possibly go wrong with it.
I also think that the removable battery in the H7 is an under-appreciated feature. Even if you don't keep it long enough for the battery to be an issue, if you sell it, the prospective buyer knows they can simply get a new battery which is fantastic. I still really think the extra hassle is worth it mate, try both, I know it is easy for me to say, but these are different enough and good enough headphones that simply guessing without hearing will always leave you wondering. I'm also being selfish as I would love to hear from somebody who can compare them side by side like that, certainly would be a head-fi first!
Hmm, interesting. I will definitely consider it. B&O provides 15 days of trying while B&W allows 60 days. Do you think these wireless headphones require any burning in like with wired headphones?
What I'm a bit concerned about is finding a BT adapter that will connect these headphones to my pc so I can try things other than just music, such as movies, flac files and movies. I also would want to compare the mic qualities so I would need an adapter that can both transmit and receive data - only one I found so far that does it while with APTX support is Sennheiser BTD800.. Argh, I am not sure if it will even work with these headphones.. I know p7 has 2 mics while h7 has 1 mic so I am curious how they match up for call quality..
I can try them on my Samsung Galaxy s6 as well. Basically, I would need to figure out music that goes both low and music that goes high in notes to compare bass and treble. Not sure yet.