Tax Act might be good but I have filed with Credit Karma the last couple of years. It's quick, accurate and free!
As to the actual laptop, the cheapies are likely Chromebooks which are great for accessing online content but not so good for software you might like to reside on your computer. I looked around for a few months and found a great deal on a Windows laptop at Office Depot (or Max) with touch screen (required) and a large SSD for the best speed. Using that today and it was less than $500.