Just got these yesterday, had initial troubles with the mic not working when using the singly 3.5 mm jack on the combo jack on my laptop after switching to the two separate audio and mic jacks and using my Logitech analog to USB dongle thing they worked fine, even the virtual 7.1 when using Logitech's software. After a solid day of using them (today) I've found no problems. They sound good when watching a movie on the go, (Guardians of the Galaxy) as well as when I'm listening to music, the mic is good for chatting over discord or your preferred program and my friend found no problem with my quality in voice through the mic besides my patchy internet. The headband at the top can be adjusted as suited but I found no need to and left it on the default configuration. When using the single 3.5 mm cable variation the cable length is roughly halved which makes it very nice for just using while walking around or on the bus, which is complimented by how the mic slides away, I can nearly slide it in without having to hold the headset but I think after doing it a few more times I won't need to hold them anymore. They also comfortably sit around my neck, when I need to take them off to talk to someone. I also had no problems then wearing them for an extended period of time, due to their nice earmuffs and solid but light build. They can fold flat which is good for travelling however there are some improvements that it definitely needs; for starters a lower price point seeing as the Logitech G430's are priced at $120 and offer an almost identical experience, however they are slightly less portable; being heavier, however you can wear them for longer periods of time and have the option for them to be either analog or digital with their included dongle or analog by not using the dongle. But with the SteelSeries Arctis 3's you are limited to only analog at the $190 , so at this point they are feeling overpriced and that's because they are. So if you're in the market for a pair of headphones to use as your daily drivers while you're out and about these are for you, with their shortened cable that can fully detach and their share jack. (Yes they have a jack on the headphones to plug in another set of headphones.) However if you need a pair of headphones for staying at your desk and being used for gaming, I strongly recommend the Logitech G430's seeing as they are cheaper and sound the same.
TLDR: I found both headsets equally nice but the pricing for the Arctis 3 is unacceptable for an analog only connection. However having the option for a shorter cable length and a different audio jack setup on the Arctis 3's is much nicer apposed to being stuck with Logitech's 3.5 meter long cable and the 2 audio jacks all the time.