The Clear 4G+ Mobile Series S USB modem makes a great Internet connection for anyone who lives in an area where Clear's 4G coverage is available.

Verizon's LG VL600 LTE USB Modem offers arguably the fastest mobile Internet access solution for those who can afford Verizon's data plans.

The T-Mobile webConnect Rocket provided blazing download and upload speeds, but it's tripped up by the fact that the carrier's HSPA+ coverage is quite limited at this time.

For road warriors, the Sprint Overdrive mobile hot spot offers reliable and fast 4G speeds, provided you live in a coverage area. If not, it does 3G, too; we just wish it had a longer battery life.

If you can afford the service plan and stay within the required data limits, the Sprint Novatel Wireless MiFi 2200 mobile router is a great way to access the Internet on the go.

If you're looking for a fast, reliable, portable cellular modem, the Sierra Wireless 598U delivers and even offers GPS.

The Verizon Wireless USB760 modem offers great connection speeds and coverage, and it doubles as a storage device. However, its rigid, nonswivel design makes it difficult to use in tight situations.

The T-Mobile WebConnect USB Laptop Stick works just fine as a cellular modem, but the service plan is priced too high.