A new study by a cloud-based PC admin software maker, Soluto, concludes that bloatware included on most Windows PC notebooks by the manufacturers is harming the Windows experience to such an extent that the best portable on which to run Windows is now Apple's MacBook Pro. In part this is because, like the other PC models judged to be the most reliable, the Mac requires a "clean" copy of Windows. The company gathered boot-up times, crash or hang incidents, background process logs and BSOD reports from 150,000 notebook PCs to come up with the rankings.