I had the UE 900 and the upgraded UE 900s. While I loved the sound the issues were really frustrating to say the least. After searching for long time I found the Denon Music Maniac AH-C120MA to be excellent and very close to the UE 900s in terms of SQ. Unlike the name suggests they are very balanced and true. They are not as coloured as the UE 900/900s but they are richer in a way and have a great soundstage. No replaceable cable but they are bulletproof. Had mine for over a year now as a daily driver with many hours on them with zero issues. I hope it helps.
If you're interested in thinking of selling my UE900S with all packaging (carrying case included) minus the extra black cable (lost it) and minus 4 silicone tips (I lost em). Everything is essentially new from the comply tips to the little dispenser of the contact cleaner. I've got them new about a month ago from Amazon as a replacement to my 3+ year old UE900 and I have barely used them. They're the real UE900s. Shoot me a PM if you're interested.
Thanks for your replies! Will PM you if I need more info :)
I posted a listing in the For-Sale section with pictures if you want to check it out.