Very true Viper. I bought mine form Pccables.com and they arent just standard IDE cables with electrical tape. These are actually mnanufactured differently, with each data wire wrapped seperately with a ground wire to prevent crosstalk. I DO have a window in the side of my case and they look sweet in there. The increase of open space probably helps cooling, though the average human probably couldnt tell. What I do notice is however, the ease of moving things around and getting my fingers where I need to. Rahv, they are worth what they cost. Rounding your cables, while increasing your airflow, do not provide the benefits true rounded cables provide.
My 2 cents.