rather go with telkom, their service lately rocks. they got an android app to report faults. or you can do it on the internet. or via sms. and they log faults instantly.
openweb is not a very nice company. no matter whats wrong, its always your router or telkoms fault. they're rude and nasty. they can do with a few customer relation courses as their customer relations sukcs big time. just read the way they reply to their customers. its awful.
they might have the best internet but i'll rather go with a company thats not always blaming someone else for their faults and a little friendlier...
I also agree. Telkom works best for me and they improved significantly with their service.