I dumped Afrihost shortly after they were bought out & moved to MTN. Speeds were abysmal - which I knew would get sorted out eventually, just annoying whilst it's slow.
However, when their server that was hosting 4 of my sites went offline & it took them 9 days to acknowledge that there was a problem, and then another week to sort it out - all the while claiming "99%" uptime, I got the zigs and moved.
Been with Webafrica ever since, very happy with their Capped ADSL - R399 for 2ooGb daytime data & 1000Gb midnight to 06h00 data. DL speeds are constant 24/7 at around 15Mb/s on a 20Mb/s line.