Sony Xperia Z2
Sure, it costs a bundle, but the Sony Xperia Z2 is everything you should expect from a top-end phone. Its impressive performance rivals the Samsung Galaxy S5 for smartphone top dog, but the Z2's slick glass and metal design trumps the S5's plastic body. If you're looking for both style and substance from a phone, you've come to the right place.
Apple iPhone 5s
With an identical design to its predecessor, and the same software you can now get on most iPhones, the iPhone 5S doesn't really offer enough to justify upgrading from the iPhone 5. If you're on older iPhones though -- or you're looking to take your first steps into Apple's world -- its astonishing power, excellent camera and fingerprint scanner make it a great option to consider.
Samsung Galaxy Note 3
Its huge 5.7-inch size means the Samsung Galaxy Note 3 really won't be to everyone's taste. If you're after a big screen, however, and a phenomenally powerful phone to help tackle anything your working life is likely to throw at it -- and you fancy hand-writing notes with a stylus -- the Note 3 is the best massive mobile around.