The home pro accounts seem old, when I went into my products page the home pro accounts didnt come with the 00:00-06:00GB extra bandwidth, on the webafrica site they are listed under the same priority as business capped. For a quick reference it may help. I summarised the capped vs uncapped from their site
http://support.webafrica.co.za/index.php?/Knowledgebase/Article/View/669/0/bandwidth-priority-profiles
The capped accounts are basically one level up, so home capped = business uncapped quality. Business capped = business pro quality, business capped pro one level above business uncapped pro.
The 1GB home capped accounts are free, you may want to give one a try. I tested it against my Afrihost Business Uncapped today with just downloading a 50MB file from my overseas ftp at 1pm, 180KB/s Afrihost, 420KB/s Home Capped. So on my 4mbit line its not possible to actually have the business faster than home since at lest for 4mbit my line was maxed.
The simple...
Home Capped = Titanium
Business Capped = Gold
Business Capped Pro = Platinum
Home Uncapped = Silver
Business Uncapped = Titanium
Business Pro Uncapped = Gold
No Titanium Uncapped Package