Depends, I have helped two different people update their machines to 8.1 and i have now put both machines back to Windows 8, i am so glad I made images of both machines.
One person thought his machine was running slower and to be honest it did seem a bit slower, but the main reason both changed back to windows 8 is because of sky drive. they both uses skydrive, they use a desktop application, which don't work on 8.1. With 8.1 your computer have to stay connected to the Microsoft account. they did not like that idea.
in other words you can't use sky drive in 8,1 like you could in windows 8 with a local account.
As of yet, I have not updated, still running windows 8, not that I use it much these days.
Desktop machine now powered by windows 8 pro 64bit, no dreaded metro , laptop by Mint
ALLPAY Wireless broadband
Edited by zyborg47 (Mon 04-Nov-13 08:45:56)