Honestly, I think we need more versions.... ;-) This was written for those interested in upgrading/installing a new version of Windows on their S10-3T. I will briefly go through what I know and have experienced with the different versions of Windows 7.
What you end up installing will matter because your system's performance is affected by your operating system. For the optimal results I recommend Home Premium or Professional. I hope my views help you decide what's best for you. However, because I'm obviously siding with two versions of Windows 7, you should check Wikipedia's table comparison for more detailed info - http://en.wikipedia.org/wiki/Windows_7_editions
Other options include switching to XP, Linux, or Mac OSX. Linux would be the lightest.
Get Windows 7 Home Premium, Pro or Ultimate. Starter is retarded.