Looking for some insights from those in the know about bandwidth and such stuff, as I am completely clueless. I am signing up for a new broadband service and there is a new system here in Japan using optical fiber vdsl (whatever that means) and advertising 1GPS as the speed. Alternately, there a lot of regular ADSL services available that have been pretty good to me. The prices are not much different. Any downsides to the optical fiber thing?