The Afrihost MiFi 2 + 3 deal sounds too good to be true .......and unfortunately the old cliché rings true.
Mostly the signal is too bad to use and even if in a area where you would expect good signal the performance is extremely variable.
We definitely don't sell a degraded product to bring the price down. Our data runs on the entire MTN data network as it's available, we shouldn't see different performance to any regular MTN data service.
However, performance is going to be affected by signal and demand in your area. There is an MTN coverage enquiry process for the MTN to test the available signal in your area.
https://www.mtn.co.za/_LAYOUTS/MTN.SP2010.FormsData/Networkcoveragequery.aspx