Well done Zen!
From a personal perspective it doesn't affect me as my average monthly download is just under 15Gb. I only once breached the limit (when it was 20Gb) and I had to buy and extra 1Gb, of which I only used 23Mb. Now I have no chance of eating into my download 'bank'. That said, it's nice to see some movement on the product offerings from Zen. If only the Lite product had a 20Gb limit, then I could reduce my costs
Fingers crossed that my migration to 'up to 20Mbps' goes smoothly next week (although I don't expect much improvement over my current 4Mbps profile).