Why this obsession with tiles? OK for tablets etc. but a waste of time on a decent desktop (or even laptop). They'll never improve upon Win7 at this rate, but I'll reserve judgement for a bit until I've seen the full Monty, so to speak.
Dell Studio1558 with Win7 Home Premium
HP Pavilion netbook Win8 8GB RAM
IE11 and Live Mail
BT Infinity 2 via HH5
(Virgin 150Mbs as backup)