Gingas has a good point. The insurance on the RL will be more expensive, gas will be more expensive, and don't forget about property tax. When I had my RL- 99-2.5- my property tax was 250$ a year which was like a kick in the balls after paying only 90$ for my integra. Both of these are great cars though. What you really need to decide is:
1. are the extra features like heated seats, premium audio worth the extra money you will shell out in the long run?
2. Which one do you feel more comfortable driving or have more fun driving?

I just have to say, I loved my RL but some of my friends gave me hell for it like
When did you get married?
Where are the kids tonight?
Plus my RL started having problems (nothing serious but I just didn't love it like I loved my integra) so I went back to something more comfortable personally. 99 Civic Si
Either way you go man your gonna have a damn good first car. Better than my 250$ frankenstein junkyard 82 datsun nissan sentra.