Karaoke places

Hi.
I'm going out with some friends this week to sing some Karaoke, but since I still havn't found that many good by myself, Iwas hoping for some help.
We live around Taito-ku, and are searching for cheap places for a 10-more people group.
Please share some info if you know of any good places around this area, or around Akihabara and Ueno.

Very thankful for all kind of help!

http://www.ivebeenthere.co.uk/places/japan/tokyo/tips/karaoke

Here is a short list of some karaoke bars with their address and sometimes phone numbers, rough pricing (in Euro's), and a general rating.

Other than that, just walk around during a morning and ask around...there's a ton to choose from.