ok so ive been ringing around some isp to get thier contention ratio and a little info from thier websites, this is what i found so far:
supanet
contention ratio - 50:1
risk - acceptable use policy!
ukonline
contention ratio - 33:1
risk - find out if they do up to 8Mb unlimited - only delivered through their own network, wankers
virgin
contention ratio - 50:1
risk - appears crap
pipex
risk - big no no fair use policy!
bt
contention ratio - wont even tell me!!!
risks - stupid foreign technical advisor didnt know what i was talking about was on hold for about ten mins to be told not even existing customers can have the contention ratio!!!!!!
eclipse
contention ratio - they prioritse for downloader depending on the package you have
risk - cant see any yet
tiscali
contention ratio - 50-100:1
toucan
risks fair usage policy big no no!!!!
ok eclipse is the best at the moment with a birtish call center meaning i could understand everything he said to me plus he also knew what he was talking about. they dont really have a contention ratio as they have different packages options for example they have options 1-4. option 1 is for light web browers, option 4 is for heavy downlaoders and 2,3 in the middle. so what they do is they prioritize at peak times more bandwidth for option 4 to keep thier speeds up as they will need it and cut down on packgae 1 as they wont need it. obvisously you pay more for option 4 being £30 and option 1 being £15.