HuntandFish,
I take it you have already seen the comparison graphs that appear on the BBC Diagnostics site once you have done your speed test ?
BBC iPlayer - Diagnostics
By the sounds of it, this is what you are looking to illustrate. My I also suggest that given your target audience, you take a leaf out of the BBC's book and use graphics rather than yet more text to illustrate a point.
Tonka777,
be less buffering required
You must understand that DSL services are on the bottom of the food chain.
Many factors are involved in the quality of the final connection you receive. The magic speed number quoted to you in the marketing bumpf and paperwork can end up meaning nothing at all in the face of contention, limiting, throttling, shaping, FUP and all the other spanners that get thrown in the works.