After some consideration I finally decided to run as a PLD. I came to this conclusion because I felt that it has all of the necessary utilities.
I know it may not have an extremely high damage output compared to other tank classes but it still seems to be able to hold it's own.
After i've nailed the tanking mindset and rotations i'll definitely be moving on to test drive the rest. Though so far so good! It's been a nice transition from mainly DPS and tanking dungeons/raids etc has been a joy so far.
I appreciate the advice everyone has given, it's definitely made a huge impact on my decision!