It's a tough call, both are first rate and you can't go wrong either way....
RC is more of a sports car....only two real seats, stick shift....this would be my first pic for someone getting just a toy....or maybe a single guy's daily driver....
QC, other than mileage, you get more options here....not only can you go 150 mph, you can haul 3 of your best friends with you......it's great for a couples night out, good if you need to take out clients, great for towing, and if your spouse can't drive a stick she'll like this option more....
Both are great....I had an 05 and an 06.....both have great seats and the interior is just really a question of preference....I actually prefer the look of the 06 front end to that of the 05.....
Good luck....either way, they are tons of fun...