I've got a MacBook Pro - and, honestly, I have never got a better laptop in my life. It costs a lot, but it's worth every penny.
However, Trados-wise, you have to consider the following:
First of all, you'll have to buy a copy of Windows, since it's obviously not included with a Mac computer.
Then, installation-wise:
Installing Windows on a Mac using a bootcamp is actually easier than installing a Windows on an average Windows PC - believe me, I did that. Don't worry, just follow the instructions of 'Boot camp assistant' you'll find on your Mac.
However, Bootcamp has its drawbacks.
1) you'll have to restart your Mac every time you want Windows.
2) in a standard configuration, you'll have no access whatsoever to the Mac partition from Windows (unless you install additional paid software), and you'll only have a read-only access from macOS to the Windows partition.
3) You'll have to keep two copies of all of your clouds (oneDrive, Dropbox etc.), one copy for mac, and another for Windows.
4) You won't be able to resize your partitions (unless you buy a third-party software that allows you to do it.), so if your Windows partition becomes too 'tight', the only option available to you will be to delete it completely and recreate it from scratch.

So I prefer Parallels. It's a VM, very user-friendly and so far it hasn't given me any problem.
Trados 2017 DOES work in Parallels without any problem (some Trados help page mentions that you have to disable shared access of Windows to Mac folders, but again it works in my case.)
Parallels drawbacks? It's a paid program (USD 79 (permanent licence) for a Home version that has limitations on the number of processors and RAM, max mount being 4 processors and 8 GB of RAM; there's a pro version at USD 99 / year) - and that's it.

Just don't expect you'll be able to reduce Mac partition to a minimum and just stick to Windows (that's what I thought when I was buying my MBP) Once you start your mac for the first time, you'll want to stay on Mac - it's contagious. 
That is another reason I recommend Parallels - because it allows you to work with any Windows program as if it were a Mac program.

I've got a MacBook Pro - and, honestly, I have never got a better laptop in my life. It costs a lot, but it's worth every penny.
However, Trados-wise, you have to consider the following:
First of all, you'll have to buy a copy of Windows, since it's obviously not included with a Mac computer.
Then, installation-wise:
Installing Windows on a Mac using a bootcamp is actually easier than installing a Windows on an average Windows PC - believe me, I did that. Don't worry, just follow the instructions of 'Boot camp assistant' you'll find on your Mac.
However, Bootcamp has its drawbacks.
1) you'll have to restart your Mac every time you want Windows.
2) in a standard configuration, you'll have no access whatsoever to the Mac partition from Windows (unless you install additional paid software), and you'll only have a read-only access from macOS to the Windows partition.
3) You'll have to keep two copies of all of your clouds (oneDrive, Dropbox etc.), one copy for mac, and another for Windows.
4) You won't be able to resize your partitions (unless you buy a third-party software that allows you to do it.), so if your Windows partition becomes too 'tight', the only option available to you will be to delete it completely and recreate it from scratch.

So I prefer Parallels. It's a VM, very user-friendly and so far it hasn't given me any problem.
Trados 2017 DOES work in Parallels without any problem (some Trados help page mentions that you have to disable shared access of Windows to Mac folders, but again it works in my case.)
Parallels drawbacks? It's a paid program (USD 79 (permanent licence) for a Home version that has limitations on the number of processors and RAM, max mount being 4 processors and 8 GB of RAM; there's a pro version at USD 99 / year) - and that's it.

Just don't expect you'll be able to reduce Mac partition to a minimum and just stick to Windows (that's what I thought when I was buying my MBP) Once you start your mac for the first time, you'll want to stay on Mac - it's contagious. 
That is another reason I recommend Parallels - because it allows you to work with any Windows program as if it were a Mac program.