For many years, I've been a PC/laptop Windows user. I've used quite a few brands, namely IBM, Dell, Acer, ASUS, HP, Lenovo.
I got a MacBook Pro as part of a promo bundle a few years ago when I signed up for a 24-months contract for a new broadband line. It was nice to work with but I ended up selling it away to buy an ASUS laptop with much better specs. (The ASUS laptop was great till it had plenty of issues.)
In my opinion, PC is better to work with as many IM software are Windows-based. Another plus point for PC is that there are plenty of software that you can use to enhance your productivity when you are working online.
If you are looking for a Windows PC or laptop, go for Dell. They have very good support. Don't go for ASUS or Acer simply because their support is shit!