My iPad 1 was a 3G model, and I never activated 3G on it. I had a Verizon 2200 mifi That I used to connect with, so I never used the 3G feature. I went with the wifi only version for my iPad 2 since I use a mifi personal hotspot. I recently upgraded my 2200 3G mifi to the new 4G LTE mifi, and I've been getting similar speeds as my home wireless connection (+-12 Mbps), so I'm very happy with my decision. I only get +-1Mbps on AT&T 3G. Of course, I don't only use my iPad with my 4G mifi, so this is not an option for everyone. Since I have unlimited data through AT&T, I wouldn't give up my unlimited to use their tethering plan. I would just use mywi or tetherme on my jb iPhone, and limit my usage. If I didn't have unlimited data, I would probably get a 3G iPad 2 so I don't use up my iPhone battery to us the iPhone 3G data.