No good ones. One thats able to cool a q6600 overclocked better than the best air HS? Yes. But can't do more than that.
A good WC loop with Top parts for a CPU only is about $250-$300. Add about another $100+ to add the GPU too.
Type this in google.
swiftech 220 compact kit.
Quality parts, reputable company, very basic, great starter loop.
Do not buy thermaltake, koolance, etc etc etc.
And my stadard cut n paste for WC noobs.
I'll steer you to some more technical links, please spend a few days (DAYS) reading posts, searching, learning. Don't forget to look for your case with WC. Google your case and the word watercool or some combination of that. WC stuff is larger than you think, I know from experience. WC setups done right are awesome and almost silent.
Great place, not wayyy over the top with uber WC guys.
http://www.ocforums.com/index.php
Uber place, owned by one of the worlds winning OC guys in the world. Not a place to post or ask questions by noobs, but an awesome place to learn.
http://www.xtremesystems.org/forums/
Another good place to learn
http://www.overclock.net/water-cooling/
The best link to explain what parts you’ll need
http://forums.extremeoverclocking.com/t282232.html
Great places to buy WC stuff
http://www.dangerden.com/index.php [...] e&Itemid=1
http://www.petrastechshop.com/
http://www.jab-tech.com/
Hope it helps, see ya in a few days, get edumacated!