I currently have unlimited data with AT&T on my iPhone 4 but I'm about to purchase an iPad 2 and I'm debating if I should just give up my unlimited and add hotspot functionality or just get the 3G iPad 2. The benefits of this is that I'd be able to tether my laptop if the need were to occur. I don't use more than ~1GB on my iPhone a month so I'm not worried about overages. Jailbreaking is not an option (drains my battery very fast). So does the hotspot drain just as bad? The cost is practically the same so thats not an issue.