Might I suggest … Cutting Edge Cellular … their Lightyear Wireless offers Nationwide Unlimited Talk, Text & Data for $59.99 … you have no cap on data or throttling and it’s Nationwide so business traveling is great… you can even refer three (3) customers to their service and get your service for free… making that monthly cell phone bill a thing of the past… http://www.cuttingedgecellular.com They also offer the ability to broadcast a WIFI from you cell to you computer or other devices… Most of the companies out there are limiting or throttling data service after only a few Gigs… check the fine print… 
Another great option to consider….  

Verizon may not be the least expensive, but it is the most reliable. I read an article when I was shopping networks that explained how the tech convention CES was the ultimate testing ground for cell networks. Due to all the cell phone use at a convention like that, you can really get a feel for what networks work best. 

All the carriers had major issues except one … Verizon. While all the cell phone users of other carriers were cursing at their phone’s, those on Verizon were smiling.

I’m a heavy heavy internet user, I’m on ALL the time. I thought for sure I wouldn’t be able to stay under the 2GB data cap I have on my plan. I’ve had Verizon since February and have only used a very small fraction of the 2GB. In fact it hasn’t even been more than 1% … the key … use WiFi anytime it’s available!

Hope that helps … Scott