I am finding that I am using Microsoft Office less and less. Since getting my Mac almost 2 years ago I started using Numbers, Pages and Keynote. I do have Word, Excel and Power Point on my Mac as well. I also use an iPad 3, iPad mini and an iPhone 5.
I rarely have a need for a presentation so I rarely use PowerPoint/KeyNote, but they are nice to have. Since I really haven't used either extensively in the past few years I can't say which is better.
I do prefer the features and speed of Excel, but at the same time I like the ease of compatibility between my devices when I use Numbers. Therefore I find myself using Numbers more and more frequently. I input something and it updates immediately through the iCloud to all my devices. Not so much the case with Excel.
As for the writing, I like Pages a little better because it is more freeform than Word. I recently put in for a transfer at work and did my resume in both Pages and Word and the Pages version looked better and I submitted that and there was no problems with them opening the document in Word. I did get the transfer so I guess they liked it. I can also whip out a great looking document in no time in Pages, but with Word I have to fight to get the graphics the way I want them, and a lot of the other formatting issues are just a pain. With Pages it's just point, click move and everything falls in place the way I want it. Simple, and easy.
When I use the same fonts that are on all the devices, my documents and everything looks perfect across all three types of devices, iPhone, iPad and Mac. It's the way it should be.
I cannot understand why, after the amount of iPads and iPhones that have been sold to date, why Microsoft has not issued an iOS version of Office, or something that will work with at least the iPad. Their web based versions are junk. As a Mac user I see no reason whatsoever to upgrade to their Office 365 if it won't even enhance my ability to use even the web based versions. They claim you can use any device with Office 365, but look closely and you won't see any iOS device mentioned.
I do hope that Apple updates the iWork suite and soon. There are things I like about Excel that aren't in Numbers and there are things about Numbers that aren't in Excel, so it's a give and take. Sure Numbers needs to be speeded up a bit, but in the grand scheme of things and the way I work, Microsoft's Office is slowly becoming a thing of the past in my world. As I use Numbers more and more I am liking it better.
Shame too, since all three of the main Office apps (Excel Word and Power Point ) were all originally written for the Mac and later ported to Windows.