Is it worth it to buy a Mac?

I have a PC with Windows, a laptop with Windows, an iPad 1, an iPhone 4S, and a PS3.
I want to buy a Mac Mini (the one at the lower price).
I have not decided because I haven’t used a Mac before.
In another train of thought, I think that the new iPad looks amazing.
I’m thinking about getting it before the Mac Mini, but I already have an iPad 1.
So what to do?