The X6 is the prefect upgrade for those that loved the Nokia 5800xm. It's also a great all rounder with an excellent sounding music player.
My favourite features include:
Build quality, it really feels like an expensive product.
GPS - Probably the best i've used in a phone.
Screen - very responsive and capacitive, like the iphones screen.
Sound - It's stereo speakers are great, much better than most phones and even most laptop computers! It's great through the headphones too.
Speed - Runs fast and smooth.
Storage - 16gb is a good amount for the price, it also has around 285mb of phone memory too, perfect for installing apps to.
Free sat nav - Works very well with plenty of options.
Camera - Takes great pictures which is surprising for a "music" phone.
So I would recommend this phone to anyone and especially to those that liked the 5800 and want something better.