I like the Swiftech blocks (CPU and GPU).
... And I suspect the Swiftech "kits" are fine
However, for a quiet system already "tuned" around a radiator that can use / be put in place of an 80mm fan, I'd think seriously about the Innovatek stuff.
Or, given that you're going to be using an 80mm radiator
Eheim 1046 centrifugal pump about $39 at directron
AGB-o-matic resevoir $30 http://www.highspeedpc.com/Merchant2/merchant.mv?Screen=PROD&Store_Code=HSPC&Product_Code=AGBtank&Category_Code=Tanks
Black Ice micro 80mm rad $43 at becooling http://becooling.safeshopper.com/17/143.htm?584
Swiftech MCW372 Waterblock $37 http://www.crazypc.com/Merchant2/merchant.mv?Screen=PROD&Store_Code=120199&Product_Code=9301
... which gets you to $149, not counting shipping - and you still need tubing ($10 for silicone at US Plastic) a barb fitting for the resevoir (1/4NPT to whatever size tubing you decide on), or if you decide you line the Innovatek fittings (one will come with the resevoir), a couple of "step"up tubing adaptors (20 cents each or so) to get your 8mm tubing to make with the 1/2" radiator spigots, possiblu a pair of push-in "speedfit" adapers for the Swiftech ($2 each or so) and, finally, a relatively quiet 80mm fan (bet you've got one already).
Note that the MCW372 is now obsolete, but I like it a lot as it's Swiftech quality and "hoses" the water stream right over the die contact area. It's really
easy to mount and you can still get the bits from swiftech if you want this to be a TEC cooler - although, you probably won't be doing this with an 80mm form-factor radiator.
So, there ya go a by-bob kit for under $200.
PS: No you don't really need the resevoir, but it's a very nice thing to have when filling the system, and, if the pump is at the bottom of your circuit, essentially reduces required suction head to zero, which is a good thing for centrifugal pumps.
PS2: I'm running a similar cooling system (but 120mm form factor radiator), fans slow enough to be inaudible, and get temps 10C above board temp (using case air exhausted through radiator). I've overclocked an athalon t'bred ('A', sadly, not 'B', which'll reportedly go 200x12) to 200x10.5 (so about 20% over stock speed - much
faster FSB, though). Not overclocking to the point of needing overvoltage, though...
I'm also not running a GPU cooler as I use this box for 2D work and haven't run into a better 2D card than the Matrox Milennium 400/450, which run very cool passively.