jst went to from a s3 to s4then to htc m8,the build quality is like nothing ive seen before,but what killed it for me was that thay moved the bottom buttons back/ect onto the screen,also has this big black htcd black screen undearth,with me sitting comparing the 2 of them side by side the htc colours looked washed out compared against the s4,which is to be inspected,but to much of a difrence for me ,its like looking at hd v sd didnt like the way the icons scrolled down instead of side t0 side like trhe s4,look im no samaumg fanboy,this my honest thought while havings both side by side,plus the big thing for me is u cant change the battery and its extremley hard to do as the battery is under the motherboeard with all types of glue aswell,you it would cost u £50 to have the battery replaced,tbut defo the best lokking and powerfull ive seen,shame i had to put it on gumtree ias i really wantrd to like as i jst didnt fell like i upgraded from s3 to s4,sure the texts are saharper and colour is better,reaally confused,and honestly i think the s5 is horrible looking,have a m8 in 1 hand and a s5/s4 in the othe and youl instanstly know wit i mean,also i had to cmpare the 2 side by side s4/m8 and although the m8 is about a inch longer the actual screen to me felt shorter as i felk like the status bar at top is way to big/long taking uo to much screen and then u have a 1 inch black screen appear for the bck buttons at that bottom which to me makes its feel like the same as the s3,u would need to hold one to see what i mean/hopefully custom fw will fix it