I bought an Acer about 2 years ago at Radio Shack and it's served me well. I've had no problems at all and, even if I did, I bought a two-year extended warranty so it's still covered.
I would strongly recommend making sure you have at least a 3-year warranty as laptops are infamous for self-destructing within a couple years of purchase (and the basic warranty usually expires after 1 year). An extended warranty is usually several hundred bucks, so factor that into the purchase price.
Also be aware that you can sometimes buy a cheaper extended warranty directly from the manufacturer. I saved about $100 on mine by going with the Acer extended warranty over the Radio Shack extended warranty.