I would never buy a gateway, service is crap. What do you use your laptop for? You looking for something cheap? something with some power?
For our admins/power users we use Sony Vaio's. Great picture quality with a lot of features but can be a little pricey. We have 67 Vaio's and we have had issues with 3.
For our normal everyday users we use Dell's. You have a lot of different options here and you can get great deals. Phone service is not that bad but if you use the online support system it is a lot faster and you can get next day service if you have hardware issues. We have 292 Dell's and we have received 6 with bad batteries.