The "free" router and Black Smart(TV)box they offer for 20Mb/s fibre services is god-awful and completely overpriced, aggravated by the fact that you also pay for the "free personal" on-site installation/setup. Steer clear if you are not savvy with setting yourself up otherwise you're in for a huge clawback bill if you cancel before 24-months.
As for speeds and network quality, zero complaints. Most of the issues I table directly with Openserve via Twitter as I've had nothing ISP related go wrong with them, yet. R799 for 20/10 is a bargain of OpenServe is your only option.
I cant agree more.... I am still waiting for the Black Smart Box