Although it's always useful to review topics regularly in the fast-moving world of Computing, this topic has been covered regularly and recently in this Forum and I suggest you use the search engine to find the threads.
Dell, Toshiba, Compaq are all good. Sony, too have good designs but their after-sales Service is appalling and they load their products with propriety software so, if you want to do a clean reload, say, of just Windows, you can't.
Suggest you go look and come back with specific questions.