Deleting the muffler and resonators (going straight pipe) will make your car drone like crazy inside the cabin. Would not suggest that route as the sound will sound sloppy and cheap IMHO.
I would agree to atleast get the Megan's for $600-$700 over doing the straight pipes which are guaranteed to drone like hell!
I have a great pair of Eisenmann Race axle back with black tips if you're interested
