what sounds good to you might sound like crap to another person. NEVER listen to a set of speakers based on brand name. Listen to them based on what sounds good to YOUR ear.
You might be surprised what sounds good to you if the speakers you were listening to were covered up!
I have doen a killer SQ system years ago using CHEAP radio shack speakers. I think the cost was about 60 bucks for the tweets and 5 inchers. A little X-over works and placement resulted in a WOW, that sounds AWESOME system.
THe stockers that DCX uses were OKAY, but I didn't keep them for long. I had some aftermarket Infiniti's before and they were okay. I have the Pioneer Rev speakers in my car, and I would not trade them for any other speaker I have ever heard before.