Power Supply ?

I am thinking about getting a new power supply. I was looking at the Enermax 450. But I noticed that there are four different models of it. What is the difference and which one should I get? Anyone have any better suggestions for a Power supply? I was looking at spending around $100, and am running video, sound, CD-RW, DVD, 2 Hard Drives, LAN, 4 External fans, hard drive cooler, Athlon 1200, CPU Fan, and an A7V. What should I get?

Thanks in advance.

Personally, I'd order a 400W Sparkle from NewEgg.

I have heard good things about Sparkle. That also looks like a good site. They had the Enermax's with cheap shipping. Thanks.

I looked at the differences and they are just fan control, why do I need that? I just want to turn it up all the way anyways. Are there any really big differences that I should know about.