All ratings are different. There are different techniques involved with each one. I've got all 5 from the old days. My advice is approach/tower, but this what I personally prefer. Seeing the a/c and tight vectoring. I was advised when I worked as an assistant at LATCC to do area if we had to choose, luckily made to do the lot. With area you are limited to your destination either Swanick or eventually Prestwick. If you do tower/approach then you can work anywhere in the country. Or even with the new harmonised licences work abroad. This is only my view from experience and what I prefer, many controllers will disagree as they prefer the centres. Also as somebody posted earlier, the success rate is higher for tower/approach. I'm not saying easier, as all disciplines are different. Take the course and get your foot on the ladder of a great career. If it doesn't work out come and fly it's easier.
Rgds ILS 119.5