I guess none of you made the effort to go to Innovateks site and read thier description of the X-flow?!
I know my german isn't the best and my skills at translating it to swedish (my native) sucks and to translate german into english is even worse... but the guys at sharkacomputers are evidently even worse than me...
Short and sweet... on the site innovatec says "the block is designed to create turbulence optimising the usage of the coolant" probably meaning transfer heat to the water ey?
Also "The cross patter design does this without putting an unusal strain on the pump or drasticly reducing waterflow compared to it's predecessor" I guess my somewhat flawed translation beats sharkas by a mile?
And in addition states that by transferring heat more efficiently to the water you use your radiator more efficiently because the difference between watertemps and room temps are higher... this last part is more than half part guess on my behalf so anyone with a better ability to translate german is more than welcome to correct me...
BUT what I make of the text there... the statements they (innovatek) make on privciples of heat transfers and such are true, and their statements about thier own product are by far more humble than sharka's... and also more than a bit more humble than Tom's statements about thier products...
As far as I know innovatek are a quite serious about their business and offer products wich are (on this side of the pond atleast) rather nicely priced for thier performance. Even with the smaller tubing these systems perform good enough for a starting kit , the flatflow and X-flow aimed at non-oc'ed systems, mainly for the silence factor and the innovaCOOL with enough head room for moderate overclocking...I have used and will recommend their smaller kits if you are looking for a silent computer, they have cooling for all parts of the system at about the same price as koolance but with as far as I know better performance and with the ease to install and professional look as most users who arent interested in building thier own blocks wan't...
But I agree with the opinion that these systems are not for the performance freaks and are in no way any serious competition to the systems the members of these boards can build... with the flaws of elbows and other problems...
Now I'll return to my quiet lurking and keep reading the informative posts here...

Just thought that you guys should put the blame on the right people...