+ 0 Votes The OS Type is vital in both of these OH Smeg Updated - 1 year ago As both have more than 4 Gig's of RAM you need a 64 Bit OS not a 32 Bit OS which can not use more than about 3.25 GIG of RAM. The extra $150.00 is buying you a Quad Core CPU with Hyper Threading as apposed to a Dual Core with Hyper Threading so the i7 appears to have 8 Cores while the i5 only shows 4 Cores. The more expensive unit has 30% more RAM then the cheaper one and RAM is the fastest way to improve performance in a computer. It's cheap and makes a massive difference to how fast the unit appears to function. The cheaper unit probably needs the faster HDD to work at a reasonable speed where as the more expensive one doesn't need the improved HDD Speed to appear that it's working fast enough. It does on the other hand have twice the storage capacity of the cheaper one and with Quickbooks & Outlook this may be important as the Data Files can get very big so extra storage space may be important. Also depending on how much Data you need to store the extra Capacity may prove useful and the i7 would have a longer expected life as it just has more processing power, memory and storage. While it's more expensive now it will be possible to upgrade the OS for longer than the cheaper one so all else being equal you'll have it longer before you need to think about replacing it. As for which would be best this all depends on how big the Data Files are, the bigger the Quickbooks Data File the slower it's going to run so the added performance may be useful. On the other hand if the Data Files are kept to a reasonable size the cheaper unit will have more than enough power for your stated needs and the extra money may very well be wasted as the added performance isn't needed or required. Though with any NB I always sell a Cool Pad like the one here http://www.amazon .com/b?ie=UTF8&node=2243862011 remember to remove the space from between amazon and the .com for a working link. These devices draw little power so they are not a massive drain on the battery and keep the NB cooler and the internal airways clear so the Note Book lasts considerably longer. Col + 0 Votes With your requirements so low... Slayer_ 1 year ago I'd suggest surfing garage sales and pawn shops, find something that is between 5 to 10 years old, and buy that. Then just replace the hard drive (since its probably near death anyways). + 2 Votes G780-21824mu is good enough Fasad1 1 year ago Based on your home use, the first one is good enough and you will save the $250. there will be no real difference in performance for home use. + 0 Votes Tough One... info 1 year ago The real question is, "What do you see yourself doing with it in 5 years?" Laptops are so powerful and cheap these days, it's easy to 'overbuy' now (and not a bad idea) not thinking that 4-5 years down the road, they won't be even MORE powerful and cheaper again! While the 'tech' answer to your question is, "You can't replace the processor in the laptop, but you CAN swap the RAM and Hard Drive, so buy the larger processor..." your 'average' user never will. By the time they would find that $600 i5 laptop to be 'slow', everything has changed so much that they just end up buying a new one. Slayer's comments are not too far off the mark, but requirements change (soon, all 'regular word processing et all will need 64bits, 4GB+ RAM, multi-core, etc... because 'that's just how it is') and you don't want to limit yourself too much. It IS slightly more difficult (expensive) to upgrade a laptop vs. a desktop. + 1 Votes laptop mikegzxzk44 1 year ago Bang for Bux !