Exhaust ideas?

I've got a 2.4l single cab... I was thinking about a new exhaust to make it sound better but i'm not sure what would be best. Magnaflow, flowmaster, etc. my brother's got a 92 3.0 with straight pipes. Sounds nice but i'm not sure if those would work on my truck.

 

I have '07 2.7l regular cab and magnaflow (supposed to be rust free construction and a little cheaper) with 4 inch piping. It sounds beast but it gets old after a while :/ ...I'm going back to stock

 

I just put a super 10 on my 4cyl, and i swear its the loudest thing I've ever heard, I will be changing this out when i get older