Whilst I am definitely not as techincally-able as many of the guys on here, I will definitely vouch for the quality of this version of HTC - well, I have the One XL
I've had it for approximately four months now and I haven't many bad words to say about it - the software is brilliant, the internet browsing is about as fast as I've ever seen on a mobile phone and the camera is, well, world-class. Those who have owned one of these beauties will testify to that.
The only slight issue I have with it is the volume of the speakers when playing music - without headphones.
Due to the build-in Beats Audio I was 'expecting' great results, ie the ability to play loud music without that distorted crackliness of many other handsets. There is definitely none of that, but then the volume is relatively quiet in comparison to other products. I am also owner (recently) of an iPhone5 and the X8 and both are noticeably much louder. That said, with headphones it is without doubt my favourite of the lot.
Anyway, given I now have three top-of-the-range phone models I definitely need to part with one and so the One XL is the one biting the bullet, I'm sad to say. The iPhone 5 is a work phone and the X8 my new 'toy'.
So if anyone is interested to take the One XL off my hands I'll be happy to listen. If not I will put it on eBay. It acceps T;Mobile/EE/Orange micro-sims, is in excellent condition other than slight scratches on the screen - not noticeable when the screen is unlocked and will definitely make a new owner happy.
I am happy to send/post pictures if people want to see it