Want to move to water cooling.

Here is my current setup.

P4 3.0 530 @ 3.46 w Asus AI
Swiftech MCX775-V Tornado 92mm
2 gig of Kingston DDR pc 3200
2 Western Digital Raptor 74 gb
Asus P5gdc
Gainward PCX 5900 128
Thermaltake Tsunami clear side
400w psu
Sony DRU-700A DVD

I'm not happy with my air cooling and would like to move to water.
I know very little about water cooling and would like to buy a complete setup.
I have $300 to spend and have 2 double size server cases coming so room wont be a problem.
The main thing is reliability "spelling?" I dont want the cheap stuff. It has to be somthing i dont have to fiddle with once a week and leak free!!!.
Second I need to get my temps down!!! I have had 3 different heatsinks in the last 2 mo and i'm not thrilled with any of them. So far the current is the best but is still lacking.

Give me some ideas!! I would like to by a complete matched setup from somone like frozen or other?
I'm looking for somthing that i dont have to mix and match just by the whole thing as a kit, follow the instructions and go

TIA
Obiwan

You should go with a 1/2" compatable waterblock and a pump. There a lot of pumps out there and its a matter of personnal choice to which one to buy.
The Ehiem pump and very good and silent.
The danger den pump is powerfull but it makea an annoying whining noise; its just a choice of personnal preference.
Also read around the forum and some of the stickies.