For a bit of history, I use my phone rarely, so only have pay-as-you-go with Rogers. If free WiFi is available, I might do some web browsing if I need to get some info quickly.
I discovered earlier this year that Rogers has pay-as-you-go data too. The cheapest is $1 for one day, or 10MB, whatever comes first. 10MB will be used up in a few minutes if you go to sites with a lot of image content. It would be ideal if you could just do text browsing for basic info in a pinch.
I've used iCab on my older PowerPC Macs on dial-up, since you can block images. It allows faster browsing on dial-up.
The older versions of IOS don't have image blocking in Safari, but iCab has a mobile version of their web browser that does. I've used it a few times now, and it really has much more capability than Safari. Image blocking is just one of the many features. 10MB lasts a reasonable amount of time if you're just doing text browsing. Better than sliced bread for the el-cheapo set.
Just my 2 cents (which rounds to nothing now)