These are beautiful looking headphones in my humble opinion. I felt a little self conscious when I first wore them on the commute to work, but have had several comments of admiration from other regular commuters. They are a little on the big size, but no bigger than a lot of other brands out there. I listen to a wide variety of music, but predominantly music that is bass heavy i.e R&B, hip-hop, dance, drum & bass etc and was very surprised when I tried my friends (dre beats pro) and found them far too bass heavy, ironic especially knowing that I like bass. I needed something that was more controlled, uncoloured, transparent but engaging, moving and dynamic. I tried then (Sennheiser Momentum) and really, really liked them, but I needed a little more weight and attack in the bass department and that's where the Focal hit the spot. I know that good sound quality is subjective and there are lots of variables to consider when branding around the performance of excellent headphones, but to me the Focal Spirit One's tick all the boxes...design, look, feel, comfort, price and most importantly performance of sound. Ultimately you need to try headphones yourself as tastes differ, but you can't go far wrong with a pair of Focal Spirit One's, they're very very good :-)
I am just an average Joe consumer and an audiophile home-cinema enthusiast who appreciates well engineered products that deliver exceptional performance, my opinion is purely my own.
I use my Galaxy Note 3 smart phone with these headphones and on occasion my Pioneer av amp at home and found them to be faultless on both fronts. Highly recommend :-)