It's definitely easier to see and touch quality, then it is to read about it. That's one of the reason that people come to baords like these and read reviews from trusted sources. Take a look at the Coolermaster RC-531 - here is a good review.
Without you listing the parts that you want to put in your rig it is almost impossible to give a good recommendation for a PSU. I can tell you that the Smartpower is not Antecs best PSU line - their TruePower series is better. I will tell you that I have an Antec Sonata II with a Smartpower 450W and it's doing a good job running my rig:
3200+ with a 15% OC (300Mhz)
HiS IceQ X800GTO (500/1000 core/mem clocks)
HDD 250GB, 16MB cache
1GB Patriot Signature Series RAM
If you can find the Sonata II under $90, then that would be a good deal, too. I don't like the duct system that is installed - removed it. Give us some details and we can narrow down some good options for your rig.