I have a Vapochill PE (the older one) and I am really satisfied with it - earlier I had water on CPU and VGA and before that I just had ordinary air-cooling.
This is my opinions about all these three kind of cooling systems:
Vapochill:
+ Really good cooling
+ Possible to overclock a lot more than anything else
+ Stable as a rock if you are careful when you mount everything
+ Good instructions and a good forum over at
http://www.vapochill.com
+ You dont have to worry a bit if there is warm weather outside, it is still going to be really cold!
- Quite noisy
- Hard to mount everything
- The dielectric grease can be hard to remove if you dont use any chemical if you plan to sell the stuff
- Expensive
- You have to have other cooling on N/B and VGA - but get water for that
Water:
+ The best stuff is when you put some pieces together and buy quality components, make sure you get good blocks.
+ Quiet
- Risky with the water
- Takes some good amount of space in the case
- Quite expensive
Make sure you have a fancontroller so you can get better cooling if needed (higher sound though)
Air:
+ Easiest mounting of these three alt's
+ "Cheap" (at least if you're not getting top of the line stuff)
- Not so quiet (at least with the cheaper stuff, I think you know what I mean)
- The fan on the VGA is very often quite bad and starts to get noisy after a while
Just my small thought.
btw, Im running the Vapo on the CPU and Water on the VGA and the N/B. With all that I am really satisfied and I don't have to worry about much...
/steimm