I am using the Samsung brand laptop but before i used the dell brand in which dell is better and Samsung is also nice laptop.
Thinkpads! Traveling all over the world, it's the only brand I trust ... and even these aren't bullet proof, but the quality usually is a bit better than a lot of the consumer stuff. Though, when the Macbook Air with i5 came out, I was tempted.
i also love dell. i have just bought a new laptop dell. i use 2 ones. they will be very helpful to my work.
HP as of now, like other companies for eg. DELL, Acer, ASUS, sony (Somehow unnecessarily pricy) and Lenovo.
I have several. Latest is a series 5 Samsung i7 Intel processor. It is OK but will probably try something else next year or when a newer processor comes out. I like to stay up to-date. Technology moves fast and will leave you in the dust quickly.