I also owned the Sansa Fuze and at one point the Sansa Fuze plus (which I found sounded even better than the Fuze and better than the iphone4 IMO). But the Fuze plus UI was just a joke. Still not even close to the sound quality I got from my older Studio V :P. Why not send me over your CK4+ and I can give a real comparison . Also what headphones did he use to do his reviews with? TF10s? lol. Hey I'll make a deal with you. If indeed the player sounds better than the Studio V I'd sell my Studio V and buy a CK4 .
Yes I owned Fuze+ for a while, the UI was a little lacking. I didn't like the SQ really either. I'd love to let you try CK4+ Lee, especially with your 1plus2, these are the problems of being on opposite sides of the world unfortunately. You have some admiring run times there though. 8 hours does become a choir. But....compared to something like the Cowon S9, CK4+ sounds like you're carrying a portable Hifi system. The sound it produces for those 8 hours is highly impressive. The mids are just like melt your brain slushy with the right IEM.