Sony Xplod Head Units... bahhh. I wouldn't do it. They're not really that impressive, most of them look goofy, and they're RMS wattage isn't impressive.
Dual... They
LOOK fancy, but in real usage are just one big mess, and really aren't worth it. again, Lower RMS
JVC makes AWESOME budget Head Units, that look very clean, pump out a decent RMS,
If I were you and getting speakers, I would go with
pioneer. They're stuff is more suited to having no external amplifier, and is generally dollars cheaper than the sony's (and in my opinion, they sound better as well)
This, In my Opinion, is what your perfect setup is looking like.
JVC KD-R600- (128.99) has a
built in Ipod control that lets you control the songs from either the CD player, or the Ipod itself
through the USB port. It also has an Aux on the front, and the
faceplate is detachable, to prevent thoughts of theft. Built in 24 bit digital-to-analog converter, and has a 2.5volt subwoofer preamp. you can also change the
color of the lighting, as well as the intensity, for about 29,790 color options. USB can also be used with Thumb Drives. Comes with Wireless Remote.
For Speakers, I would suggest these to appropriately get the most without using an external amp.
and, You said your CRX (91' right?) uses 5 1/4" in the front? because I just looked it up, and it looks like it uses 6 1/2" speakers in the front AND in the Rear. but I know your rear is screwed up.
Front- Pioneer TS-G1642R (6 1/2") or TS-G1342R (5 1/4")
Rear - Pioneer TS-A6963R (6x9") speakers
The CD player I would DEFINITELY go with. It matches what you are looking for perfectly, and nothing in the price range you have will get you what you want like this, unless you order it.
As for the speakers, Sony speakers are much better than their CD player counterparts, so if the Sony's are cheaper, go with them.
And if you can figure out if 6 1/2" speakers actually fit (from what I'm looking at, they should. Check the stocks out with a ruler or something) I would definitely go for those. The bass output is much more clean than in 5"er's.
oh, and remember, you are going to need a wiring harness for your car, otherwise, when you go to hook up your stereo.... your gonna be stuck with one big whoops. Also, your gonna want a reciever din kit so that it fits in right.