Pros: Super lightweight, airy, great bass extension
Cons: Doesn't fold, highs are a bit lost
I'm an on-ear open junkie, so this high praise says a lot about the PX95. A list of on-ear opens I have in various drawers: AKG K403, PX100-ii, PortaPros, Jays V-Jays, SR-80 and some more that I can't remember right now. My current favourite is the PX95.
Finally, an on-ear open that actually has decent bass extension without the PortaPro's boominess. There's no Sennheiser "veil" or "mid-bass hump" here (wow!), so this is closer to the PortaPros than the PX100s. Mids are decent - few on-ear opens screw those up, but what you trade in for your $40 is some detail in the very highs. Soundstage is very good, which is normal for an on-ear open.
However, the biggest shock and delight from my PX95 ownership has been its ultra light weight. I think these are the lightest on-ear open headphones I've ever used and it is so easy to just leave them on all day and night. Will these replace my workhorse K403s at my 9+hr/day desk? Quite possibly... but I'd be paranoid of having them stolen though.
vs. the PX100-ii... the PX100 comes with a carry case and folds really nicely for travel. The PX95 can't travel. PX100 may have a bit more detail in the highs.
vs. the PortaPro... PX95 is way more comfortable and easy to put on. Headband does not try to pull my hair out and it isn't a pain to adjust. As stated before, Porta's boominess gets annoying and extended wear creates some pressure points if not perfectly adjusted.
vs. the V-Jays... the V-Jays do sound better sometimes, but L and R are clearly marked on the PX95.. the VJays make it difficult to tell L and R.. and that annoys me.
vs. the K403... tough call, still evaluating this one. The K403 is a bit lighter on bass while still having great extension while still having great highs, making it better for doing work. The K403 folds flat for desk drawer storage...
vs. the SR-80. I can't compare. The SR-80 has better sound in almost all respects, but weighs a TON and the cable is far to large and heavy for portable use.
If you see the PX95 for less than $35 and you love on-ear open headphones. Click buy, don't hesitate, just click buy!!!