iPad Wi-Fi Versus iPad 3G - Five Major Differences Between iPad Wi-Fi and iPad 3G

So, what's the difference between an iPad with Wi-Fi and an iPad with 3G plus Wi-Fi? It's a question that seems to come up frequently, so I thought it would be worth finding out a few answers to the question.
I've found five major differences between the two models and keep on looking for more. Here are the five differences:
Number 1: Limited connectivity compared to the. Extensive connectivity. With the iPad Wi-Fi your connectivity to the web is limited to areas where you can access the web via Wi-Fi. With the 3G version of the iPad you can connect both via Wi-Fi or the 3G cellular network. That means it should have connectivity anywhere you get cell telephone coverage. To get the same coverage with the Wi-Fi version you would need a pocket-sized Wi-Fi, love Verizon's wi-Fi or a few of the smart phones that can act like a Wi-Fi.
Number 2: You Pay for More Connectivity. The 3G iPad costs more to get. At the time I write this, the difference is about $130 in the US. To use the 3G wireless service you need to have a wireless data plan with you carrier. In the US, AT & amp T provides data plans for a price. To start they had a $14.99 per month data plan with 250MB of data included and a $30 per month "unlimited" plan. The unlimited plan was discontinued pretty quickly and now you can get 2G of data for $25 per month.
Figure 3: iPad with 3G also has built in GPS service. The Wi-Fi version can do a few triangulation; you need a 3G iPad to get a really accurate l o c a t i o n fix.
Figure 4: a few small actual differences. On the back of the 3G iPad there is a black plastic section that enables the iPad to get a better connection to the wireless network. The 3G version also has a door on the side for you to insert the Micro SIM card. These differences are probably not that big a deal given that you will probably want to use an iPad cover to protect your iPad.
Figure 5: Shorter Battery Life for the 3G. Using the 3G network chews up more battery. From what I have read it cuts battery life from about 10 hours down to between 7 and 8 hours. Not bad, but it does count at the end of a long day.
So to sum it up, if you are just using the iPad around the house, get the Wi-Fi version and if you need to use it out in the field you are probably amended off getting the 3G version of the iPad