I use both.
Mainly a Mac Mini Aluminium tied to a 52" Plasma screen but I have 2 XP desktops and a netbook running, mostly because I'm new to Macs and if I can't figure out how to do the job I'm doing on the Mac, I do it on one of the XP machines.
Another reason is that my wife has no idea how to use a Mac so I keep them for her as well.
windows pc for about the first three and a half years of computing then sick of the instability and contrary nature of windows i bought a macbook pro,would never go back to windows now,5weeks later i bought my ipad2.
I have two Windows machines at home, both running Vista Home Premium. I use a MacBook at work. Over the years I've gotten used to switching back and forth between them and like having the best of both worlds.
Although I use to exclusively utilize Windows and traditional PC/Laptop, now I exclusively use only 3 devices (iPhone 4, iPAD, and MacBook Pro) ... all three have their purpose, and the iPAD is a wonderful "go-between", and incredibly enjoyable tool to use. You can certainly have BOTH Windows AND Apple's traditional operating system on the "same machine". I do, and still use both Office as well as iWorks, both of which and transferable. My guess is that you want less moving parts, and only want to be working with a very short list of devices. As such, I would suggest consolidating - I can tell you that I will never go back to a transitional PC and/or Laptop for anything, as Apple's products are truly Best in Class (and no, I do not work for Apple
All in good time ~ Im sure you'll have the means to acquire the equipment you'd like soon ... like everything, it takes times (as I myself have experienced
Mac OSX for everything except gaming. Although not for long. In the very near future, OSX will be the ultimate gaming device. They've defiantly got the power.