Yes, well now that i have done just a small bit of reading and then my own experiences with Koolance I can definitely agree with them being called toys.  A "friend" of mine who got into water cooling got me into Koolance becasue the warehouse in the states is just up the freeway from where I live so it was pretty easy to go that way.  
In retrospect I sure wish that I would have done a lot of reading a long time ago and found out what exactly everyone else was using before i fell into the toy box so that by now I might be a lot further ahead of the ball game in water cooling my computers.  
I'm glad I asked though but it is what i figured you would say.  It looks like I need to buy some more tools though as I had to borrow another friends tools to open up the pump for installation into that XSPC acrylic dual bay reservoir I have.  Learning we are...
Now to try and make a decision as to which "best" CPU water block to get.  You mentioned the new Swiftech revision and  I was reading up on the testing of that on 
http://martinsliquidlab.org and then all of the water blocks he is testing on the Intel i7 2600k which of course was of special interest for me but not good for making a decision quickly.  
I still wish that I could have gotten that special edition HK but oh well.  I looked everywhere I knew to look and then some and I found a lot of HK socket 1366 SE's which got my heart started the first few I found thinking that I had found the one I wanted and then seeing the 1366 and then getting bummed instead.  
That Swiftech seems to be pretty popular over here...   LOL, Maybe I need to start a poll!