Before you take the plunge to upgrade your OS, make sure your laptop will support it from your vendors website. I have a Samsung RV511 just over a year old running windows 7 and Samsung informed me that there are no plans for driver support for my laptop and shouldn't expect to see any.
I did partition my laptop hard drive and did a dual boot with the latest beta "Release Preview". With out the supporting drivers it started to act up in about 3 weeks so I just got rid of it. I did like it.
I have windows 8 Pro running on my desktop as only OS and it's fast, but does take a bit getting use to....big learning curve.