I'm an undergraduate at Stony Brook University (safety, but i had no choice) and I'm planning on buying a laptop soon, and i've narrowed down it to either a Mac, Acer, or Lenovo. I'm going to major in physics, and i'm not sure what my second major will be (math, engineering, astronomy) 1) 13 inch Macbook Processor: 2.13GHz Intel Core 2 Duo processor Ram: 2GB Hard Drive:160GB 5400-rpm I'm considering getting a Macbook Pro though it costs around $1500 and thats around my upper limit, although its better so it might be worth it. 2) Lenovo T500 (maybe T400 not really sure the difference) Processor: Processor1 Intel Core 2 Duo Processor P8600 2.26 or 2.4 GHz RAM: 2GB Hard Drive: 250GB 3) Acer Aspire 3935 Processor: Intel Core 2 Duo 2 GHz 5400RPM Ram: 3GB Hard Drive: 250GB I'm open to any suggestions, but my budgets around $1500 and I'll probably get it below that anyway. My feeling is that the Thinkpad is more reliable and might last longer, but I havent had any experience with Lenovo (my sister had an old Thinkpad from IBM). I like that Lenovo (and HP and Dell) allows me to customize, but I'm afraid I will forget something in the customization process. The Acer seems to be the cheapest and offers more RAM, but I've never heard of it until I started researching laptops and their warranty only goes to 2 years, and i would prefer at least 3 years (which apple and Lenovo give) or maybe 4. finally, although the Macbook seems slightly worse on paper for the specs, my feeling is that the Macbook is reliable and has what i need. Theres less viruses and malware on the Mac (no small problem),i could install windows (or from what I've heard Ubuntu too), and i also get an iTouch (which is pretty cool) However, Macs can be overpriced and i want to keep my mind open The important thing is what computer is best for Physics as I have to take on class on Computation for Physics on the "fundamentals of using UNIX/Linux to write computer programs for numerical algorithms using high-level compiler programming language such as Fortran 90 or C++" I get to use Stony Brook computer sites and the Macbook can run Windows programs, but I'm still worried about getting a computer that can best handle these calculations and my coursework in general. I'm also hoping that my computer will last me to the beginning of graduate school, though by that time it will probably be far outdated.