I love my Berk Midpipes. I know Mad Dad also makes similar ones, but honestly I feel like all midpipes will be very similar, and I bought these together with the axleback. You can't go wrong either way. The resonators in the Berk ones don't let the loudness get too out of control, but the sound is very throaty and deep on lower RPMs, and kind of exotic sounding when you really hit it (especially in conjunction with the Berk axleback (or any good quality axleback) and the turbo whine really sounding out with a DCI). Without resonators you might be getting into "obnoxiously loud" territory without adding any throatiness to the sound. With the current set up my car is loud enough to hear it coming into my development (and my house is way at the back) when I really hit it, but with a soft foot I can pass by cops no problem, it doesn't emit any more sound than a big pickup truck normally does while on a light throttle.
This is my car with the Berk midpipes and axleback:
(for some reason it's not letting me embed the video, sorry!)