Closed back headphones and Focal

I’ve never heard Fostex. Not sure if anyone in my town (Portland) carries them. Has anyone had these for any length of time? I haven’t had good luck with “protein leather” lasting a long time. Also, how is the build quality? The images on line don’t impress. 
And how isolating are they? That was one thing holding me back on the Focal Stellias. Not so good on passive isolation. 

I have a pair of fostex mass drop Purple Hearts which is a 900 clone. I also have sennheiser hd800 hifiman Arya and focal elaer cans, all open back. The fostex are excellent and a fun listen because bass response from those cans is stellar and sound isolation is also very good. The senn 800,s and Arya are more resolving and have a wider soundstage as most open backs do but the fostex are great. I changed the ear pads on my fostex and have been using them pretty hard for a couple of years they held up really well until I inadvertently stepped on them and broke a plastic hanger for one ear cup. The part is on order so that was my fault. I,ve listened to the Sony,s and they are nice but a lot more $ than fostex. For noise cancelling closed back Bluetooth cans I have a pair of sennheiser . Very nice, 30 hour run time, super comfy and that wonderful sennheiser sound. Hope that give u a little insight.  Happy can hunting. Todd

If you're in Portland, Echo Audio has a pretty good selection of headphones and they often have used Audeze headphones at great prices.  They currently have a pair of LCD-X (not closed back however).  They also have a pair of AKG812's, which are also not closed back, but very nice cans.  They are very detailed and neutral, a different sound signature from the Focals and very comfortable.

Thanks Big Greg. Yup, I have listened at Echo. Currently I need closed backs because my listening room is multipurpose. Living with other people ;) 

Anyone familiar with the LSA HP 2 closed back headphones? Thoughts?