May I suggest that either users leaving a rating, or kitz and co. ask for the package name in the rating form; when the user leaves a rating of their ISP on this site.
This may help others to assess the performance of an ISP at differing package levels, when doing a more detail, comments based assessment of the ISP rating.
My own experience has led me to realise that I was nieve when reading the ISP ratings page before deciding my recent move. I should have realised that the ratings being left may well be for a top end package and that ISP may well give a lesser service to a basic package customer.
Perhaps just posting this may help others be more aware!!
I choose a basic package from an ISP that matched my download and other requirements, yet narrowed my choice to the top 5 as was current in Dec 08. Having moved It could be that I either have been unlucky with my service so far, or that as a basic package customer my comments above are relevant. My ISP still appears to hold a near Top of the Pops position.
My experience with them does not warrant a top half position.
I sincerely hope this helps others considering a move,
MC