I've only worked en-route but I don't think you can really say one is "better" or "more enjoyable" - it comes down to personal choice. And that's why there is no info. Which is better, shiraz or stout?
Some points to ponder:-
You aren't locked into one or the other for the rest of your career. A bit of extra training and you're ready to change streams. No guarantee you'll get your preference or you might opt to take the next available course regardless.
With en-route you're choices are Melbourne or Brisbane (plus approach units), but then you can get a change of scene by moving between groups in the same centre.
With tower your choices for location are more varied, although that does mean you could end up being sent to any one of 27 towers. And if you want a change of scene it could mean moving a considerable distance.
Controlling a primary capital city tower is very different to controlling a procedural tower, which is very different to controlling a GAAP tower, but they're all tower controllers.
Controlling arrivals is very different to controlling a large procedural or oceanic sector, which is very different to controlling low level sectors, but they're all en-route controllers.
Each has it's good and bad points, challenges and rewards. But what those actually are comes down to each individual controller.