lugworm.
I have both PC/Windows 7 Laptop and iMac 2010. And, I can use both blind folded (well - almost). If wondering, I'm also an MCSE (Microsoft Certified Systems Engineer). Thus, I do know a few little things about computers.
Before buying either, do take the following items into consideration:
The Windows 7 has the ability to use Large fonts (aka: customize sizing of DPIs). This means one can use large fonts on high resolution screens without distortion. The Mac OS doesn't have this feature. Yes. One can change font sizing, icon sizing the use TinkerTool on an individual level. But, Mac OS lacks "global sizing without distortion ability". Of all the weaknesses of the Mac OS platform, this one is most shocking.
Within Windows 7, one can control the WebCam lighting, sizing, and some angles. Mac OS has fixed Webcams. If you need to change WebCam settings, one must buy 3rd party eyeglasses. This is the 2nd gap within Mac OS that shocks me.
For tax programs, I use our Win 7 laptop. I find Win 7 is more compatible with other common market applications.
Getting back to your "reliability" decision question....
My Windows 7 downloads much faster then my iMac. And if wondering, my iMac is wired and my Win 7 is wireless. iMac / Mac OS downloads much slower. And, you'll see this pattern on this forum and on the Apple Support forum as well. Thus, it isn't my specific configuration.
For iTunes & Photos, my iMac runs circles around my Win 7 Laptop. If into these area, definitely get the iMac. When it comes to graphics, the iMac is years a head of Win 7.
For automated backups (even using a portable attached HDD), the Mac OS Time Machine (which is included within Mac OS) is amazing. Simply set it and "away it works - in the background". Clean, simple and its easy.
For email, I like the "ease of use" on the Win 7 email package. However, I like the onscreen spell checker of the iMac. Side by side and my bad spelling gap, I'd pick the iMac for email (without downloading attachment comparisons).
IMO, My factory iMac runs too hot. They probably lowered its fan speeds to obtain high "energy savings" ratings. Thus, I had to install 3rd party SMCControl and set its fans - to make it run cooler. Now, my iMac runs much cooler (compared to factory defaults).
For hardware reliability, I would say my iMac (even with 2 major OS gaps and running hotter from factory), I'd say my iMac is much more solid machine. It feels solid, it runs solid and it acts solid. If wondering, my Win 7 machine has shown a few "blue screen of death" situations. My iMac has been rock solid - even since day 1. Despite a few of its "will be better in future version areas", my mid 2010 iMac 21.5" is a good / solid machine. And as you can tell, I'm not tunnel vision bias on iMacs.
Hope this helps in your research....
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