Not the scythe infinity, the scythe ninja. SPCR just reviewed the infinity as (with the things that I find important) inferior to the ninja.
See
Newegg Scythe Ninja
Specifically, the Ninja is lighter (less mobo stress) and performs better. Note that heatpipe tolerances are reputed to be really sloppy. You may be +/- 10% variation (according to what one heatpipe VAR mentioned). I'm sure that you can request better tolerances, but the ones used in consumer Heatsinks are probably not that good.
With air there is no worrying about galvanic corrosion, biological growths, an extra mechanical component (pump), coolant leaks, coolant transpiration, and so on. Plus, I've found that watercooled computers are harder to transport if the need arises. I'm not a lan warrior, but I would like to transport my computer if I want to do diagnostics on it at work or go visit a buddy and transfer files. I am thankful for the advent of portable USB drive enclosures with 500GB drives.