I've just done the exact same thing for the exact same reasons - my old PC was getting very slow and it didn't sync all that seamlessly with my iPhone and iPad. Anyway, I got a MacBook Pro a couple of weeks ago and after an initial wobble (what have I DONE?!!) I now love it and am so pleased I made the change.
When you purchase the Mac, you get 3 months free Apple support and the service is amazing. The phone service is manned by real people who speak human. It makes transferring from a PC very doable knowing that you can get good help easily. Specifically, they helped me transfer my PC to the Mac using the migration assistant.
Be aware, though, that you'll probably need to buy a few extra bits of kit - I've shelled out for an thunderbolt ethernet cable (£25), windows for Mac software (£100) and an external storage device (£60) for backups. You can also pay for 2 years' apple support which is £200, and which, now I've experienced the service, I thing might be money well spent. But all quite expensive on top of an expensive computer.
I'm still using windows as I've used Word and Excel forever and thought learning new programmes would be too much for me, so that required purchasing the additional Windows software, but the key thing is it works absolutely fine on the Mac. (Lots of people warned that it wouldn't).
Overall, it took a little while to get used to my new Mac, but now that I've got the hang of it, it's just great. It's much more user-friendly than my old PC - Apple seem to recognise that home-users don't have IT departments to rely on - and I've found it much easier to stay organised using Apple's email/calendar/iMessage than it was with Outlook.
So anyway, I hope this is helpful. I'm so pleased I made the switch!
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