So my wife is getting bored of waiting so I call Voda to find out when I can cancel and what the early cancellation fee is and what deal they can do a long time customer etc
It turns out that Voda can't beat other smaller providers, renting the Voda network and apparently CPW customers etc who use the Voda network get a "second rate" service as direct Voda customers get priority.
Voda, as large as they are, apparently don't have the buying power the smaller companies have and the best deal they can do for an S3 is £36 a month with a free phone, even for a long time customer who has used them for the last 11years in the UK and a few years in South Africa under the Vodacom brand.
Here are the deals MSM have at the mo on the White S3:
http://www.moneysupermarket.com/mobile-phones/brands/samsung/galaxy-siii-white/and Voda's deals:
http://www.vodafone.co.uk/brands/samsung/galaxy-s3/index.htm?icmp=int-vod-hpg-m2-btI wouldn't mind paying more IF she were to use almost 600 minutes, but she won't even use 300 and if she does it will be rare.
So it looks like either T-Mobile or Voda by proxy.
What is T-Mobile like? I've never used them, but the building I work in has a T-Mobile repeater Cel-Fi/Sure signal type thing because the other company we share the building with use T-Mobile and the signal was shocking.