Unless they came out with it now..(been I while since I looked) the Magnaflow is only 409SS which is a low grade of stainless steel. I would recommend at least a 304 grade if you plan on keeping it. I have the borla myself and I love it. Its not overly loud while cruising but mat the throttle and you can sure hear it.
The most perfect sounding exhaust was my Steeda with the ProChamber. I went with the catted X (Magnaflow) since emissions testing is getting more aggressive in my county. With the catted X, the Steeda catback was just too quiet for me. So I went with the Packs, and LOVE them.
I love my Packs and if you are worried that the tips might fall off just use torque (sp?) seal on the bolts or get those sweet looking rolled end tips from MRT. The people at Magnaflow say that they fixed the tip falling off thing a while ago though.