Hi I m using vpceh28fn sony laptop. it is a very good quality laptop.Main problem with them is of theor high price. I hve also used vpceh25en model. I hve use it for 5 years. I hve also replaced the battery of it after 5 years. the battery back up is upto 3 hours which very high compares to other products. the part of this laptop is also not easily available. but it work like butter so I m pleased with the performance. I hve got 4 gb ram with 320 gb hard disk space with 32000 rupee price but now is bit lower. I m very with this.