It'll sound like you're driving a race car all the time. No doubt it sounds good when you want to go for a blast on some twisty stuff, but it just sounds ridiculous around town. I have a friend with the same muffler delete, and driving 6 cars in front of him in traffic just makes it sound ridiculous.
I have the second resonator removed on my 325ci, now that is the best compromise imo. Only loud over 4000rpm, I'm even considering removing the other resonator now!