I had a Rockford Fosgate P3 in a custom ported box powered by a MTX amp with 1500 watts RMS in my tahoe and I really liked the setup. I have the stock bose so havent messed with it yet although I plan on putting a 4 channel on my door speakers soon and possibly putting some new door speakers in down the road. I still have my box so I'd be interested in getting another 15 but would also be open to either 2 12s or 3 10s and I was just looking for some brands to look into and possible setups. Right now I'm leaning towards the sundown SA line but I'm open to anything that can handle my amp and won't break the bank.