Or maybe a thinkpad, depending on your budget. I normally use a maxed out macbook pro but I didn't want to bring a $5k machine on vacation. So, I bought a $600 dell laptop last summer. The wifi range/reception was dreadful. Sitting beside my wife on the couch in the hotel and she was on her $1000 macbook air getting perfect reception, me wishing I had spent the extra $400.

I'm not sure if it was the wifi chipset or the antenna design, and maybe some of the higher end Dells with better radio chipsets would perform better, but I returned the laptop to Dell and I was pleasantly surprised by how easy that was. At least they're doing something right. After that, I picked up a $700 ThinkPad T-series for travel and the reception is great on it.