I have a macbook pro and find it very good (i have had a few macs through the years) keep in mind that stuff that runs on your current laptop wont necessarily run easily on the mac. If all you use your pc for is surfing the net, email and maybe a bit of word processing etc then you will be fine. If you have some games etc that you play on your pc laptop they wont run natively on the OSX platform, although there are ways and means but nothing is completly straightforward. You can use VMware on the mac and run a virtual pc instance on the mac allowing pc programs to be run as a window on your OSX mac. There is also parallels which lets you boot your mac into either OSX or Windows at start up, this affectively gives you two seperate laptop but you can only use one at a time either Windows or OSX, there is a shared resource area so you can copy stuff from one area to another. You will need to dedicate an area of your hard drive for windows and another for OSX.
Hope that all makes sense and isnt too of putting, OSX is a great OS just bear with it the first few weeks until you get how it works.
Cheers
Ian