Yeah I won't recommend Openweb uncapped products at all actually and here is why....
I'm using 10Mbps to compare.
Openweb Home 10Mbps uncapped is R349 p/m with unshaped access between 00:00 and 7am
A capped equivalent would cost you
Openweb 100GB capped unshaped R329 p/m for 100GB anytime and uncapped 00:00 to 6am daily
Vox FatPipe 100GB special for R164 x 2 for 200GB anytime unshaped data is R328 p/m
Crystalweb 90Gb anytime and 360GB from 00:00 to 6am for R295 p/m
Telkom 50GB softcap R269 p/m even cheaper if you bundle with line. Uncapped between 00:00 and 7am
These capped options seems like a much better deal and they are pretty well price. In most cases these capped accounts would give you full speed and if not very close to full speed where with uncapped it's pretty badly shaped during the day.
Even if you don't use internet during the day weekends during the day is shaped pretty badly too which means you would need to run downloads 24/7 to actually get a decent amount of data out of a uncapped account.
If you compare how much daytime data you can actually get on capped uncapped accounts are not really worth it even if it cheap because capped pricing is just good atm.
Here is a schreenshot of how a 10Mbps openweb home account runs a direct http download with 15 threads..... Not very impressive at all and if you needed something to download fast at line speed now you would be stuck waiting.....
All that said Openweb uncapped is not as bad as Afrihost but is not good either and I would NOT recommend. Get the Vox special while it is still on.