New
#11
I had some sound reasoning typed out, but I realized I don't care. You do the research and the homework and come up with a good air cooler that works good and looks good. Good luck with that! Most of them look like garbage, and take up half of the internal space in your case, oh, and using them with dual fans will potentially block some RAM slots, unless you bought low profile RAM. Noctua/Phanteks air coolers start at about $80 and go up from there. If you want a 5lb chunk of aluminum hanging precariously off the side of your motherboard go ahead......if that's the look you are going for.
Good Luck
To the OP: The tower design probably works the best, but they do take up a lot of space and don't look good IMO. Water cooling may be "dull" but it looks very sleek and clean, AND gets the job done.