Flowmaster Delta 40 Series to loud for a daily driver?

50s are quieter on the inside according to flowmaster, personally I'd wait until winter is over and go to a mustang meet and personally hear each exhuast. I love my flows, nice and deep just not loud enough for me, but if they arent louder when I get the bigger pipes... well then they'll have to be replaced.
 
use ****.com and it does a price comparison... but other than that, you may actually get a great price at a mom and pop type exhaust place, got both mine and install for 110 bucks, wich on the web was 40 dollars cheaper than I could find for a pair at that time.