I'm thinking about buying this cable, but several have mentioned that the tip/end/handle is too big to fit with other cables. I need to plug in 2 side by side. Can anybody that has this cable, measure the diameter or circumference of the end? Please clarify which dimension you're providing. Is it round or oval? If oval, what are the two diameters?Is there really a diffence between a $5, $20 and $100 fiber optic cable? I'm seeing people in both camps.Thanks!