I guess it all depends what you're looking for. The only time I go to Akihabara to shop is when I want some kind of specialized electronics parts or new/used computer parts. For these I hit the streets behind the stores on the main drag (opposite Akihabara station).

For other "mainstream" electronics/computer stuff, I find that it's a lot easier in terms of time saved, crowds, and convenience to just go to BIC Camera/Computer Kan in Ikebukuro, or a nearby Yamada Denki.