On the travel router front, I have a D-Link DWL-G730AP. I prefer it over the Linksys for one very important reason: power. The Linksys has a US-style power plug on it. As someone that travels internationally a lot, that is a pretty major drawback. The D-Link comes with an AC power adapter, but can also be powered via USB. So when I'm traveling somewhere in the States, I'll use the AC adapter so I can actually sit with my laptop on the bed in I so choose. But when traveling internationally, I can still use the travel router, albeit tethered to the laptop for power.

The only problem the D-Link has is the mode switch on the bottom is easily changed, especially when sliding it into its carry case. Thus, you have to remember to check that it is in router mode (as opposed to the access point and wireless bridge modes) before you fire it up on the hotel's Ethernet connection.