A. Acer Aspire Time line AS5810TZ: This the one of the best model they come out for October month. The combination of a modest price tag, amazing battery life and great specs has made the Acer Aspire Time line series one of the most noteworthy lines of laptops for the year.

Thanks to its power saving processor (1.3Ghz), The batteries on this model can last up to 7 hours on a single charge. This model also comes with a 320GB hard drive, 3GB of RAM and a 15.6-inch HD LED back-lit show. Weighing at just 5.3 pounds, it is also very light for a 15.6-inch laptop.

B. Apple MacBook Pro MC118LL/A: This model is the best high-end model for 2009. If you can afford high price, the Apple MacBook Pro MC118LL/A is definitely worth the asset. It has a 2.53Ghz processor, 4GB of RAM and 250 GB of Storage Drive. Like many Apple laptops, this 15.4-inch this laptop comes with a NVIDIA GeForce 9400M graphics card. The batteries on this model can last up to 7 hours on a single charge.. Performance wise, it is also Powerful than many other laptops with similar specs and configuration.

C. HP-Compaq Presario CQ60-420US: After much thought, this Compaq laptop is chosen as the best entry-level 15-inch model for current month. This laptop sports a standard design and has a standard set of specs that would be more than sufficient for normal PC users. It has a 2Ghz processor, a 250GB hard drive and 3GB of RAM. This laptop battery life is up to 8 hour..The Compaq Presario CQ60-420US is the ideal laptop if you are looking for an low price, no-frills laptop model.

At last lot of different kind of model coming with lots of different configuration. and its really hard to choice which one you need for your. For getting better knowledge about each models I would read more reviews before I choice

Before you choice laptop/computer please ensure your configuration with this type of component Hard Drive, then on SCSI 80 Pin Or also you can try SCSI Hard Drive,