Maybe I'm alon here, but I don't think Sony is crap. I have a Xplod MP3 deck with 6.5 xplod up front and 2 12" xplod subs in back. I got a good deal from a friend of mine while I was in the Army. He got orders to go to Hawaii and decided to sell his car. I got no problems with Sony. From what I could find, your speakers have been discontinued. Here are the specs for them:
Features and Benefits
XS-R1611 Coaxial 3-Way 6-1/4 in Speakers
Features:
· Coaxial 3-Way 6-1/4" Speakers
· 180 Watts Peak Power
· 40 Watts RMS
· 1-7/16" Balanced Dome Type Midrange
· 7/16" Dome Type Tweeter
· 4 Ohm Impedance
· 90dB/W/m
· 30 - 25,000 Hz Frequency Response
· H.O.P. Cone Woofer Provides Smooth Response and Deep Bass
· Balanced Drive Midrange and Dome Tweeter for Accurate High-Frequency Response
I couldn't find any reviews on them at all. crutchfield.com didn't have them either. I'd say that if you're really hurting for speakers, install them and see what happens. Judging from the specs I'd say you probably not gonna be happy with them, but like I said, if you're hurting, use them until you can get better ones.
If you really don't know shit about car audio and wanna learn, go here
http://www.crutchfieldadvisor.com/learningcenter/S-sykjy9j25bB/car/
This might help if your totally clueless.