An iPad is a viable replacement to a laptop if you have the necessary apps to do the different tasks. You can save and annotate .pdf file (Good Reader). Use Docs to Go to open/edit MSOffice files which retain their format when transferred to a PC. Creat and make presentations using Keynote. Store and read books in iBooks. Use DropBox or email to transfer files. If you are not programming or doing complex calculations then iPad is great alternative with 10 hours of use per charge. I used to carry the laptop on overseas trips. On my last trip, I carried only the iPad and was able to accomplish everything. My only apprehension was the lack of WiFi and only wired connections in the hotel rooms. I took an airport express to create my own hotspot in the room using the wired connection. If one does not need to do programming, the iPad is a great alternative that is handy to carry around and use anytime.