I asked myself the very same question when HR asked me which course I'd like to go on. I'd been on tower visits and had a visit to Swanwick...I still didn't know which I'd prefer and only knew that I liked the idea of being an Approach Controller, maybe because I sat with a Controller operating Gatwick Approach on my visit to Swanwick. I'd even thought of doing the very same thing and posting a message on here to ask people's opinions and preferences, however I then thought 'What does it matter? I'm going to be a Controller one way or the other...I'll love it anyway!' I'd spent so long weighing up the pros and cons of each that I forgot about the main reason I applied for the job...to control aircraft and you get to do that whichever course you go on.
Incidently, I went for Area!