I did understand that the 300 was an extreme case, not the norm.

The Qwest speed checker looks convenient. Work gets 13.5 down, 15.2 up, just now :-). Less competition for the upload, presumably; I doubt the underlying upload capacity is actually greater.

I've rarely gotten as high as 3Mb/s on my home link as rated by speedtest.net; I'll try the Qwest one from home tonight.