my sister has a inspiron. but I use it about 95% of the time
she bought it more than 6 or 7 months ago. so it was like 2200 at the time.
I personally like it. it runs ok. I have not run into any problem with the unit at this time. my sis upgrade the display so it is very clear and easy on the eyes.
I cant really tell you why you should choose inspiron since I am not a computer geek nor I have used other laptop to compare, but the reason we bought inspiron is because dell has the best customer service.
my sister's co-workers all use dell laptop for work, and my company's IT guys also use dell laptop at work . all of them consistantly said that the dell has the best customer support. so if the lap top breaks down, you can get it fix with the least trouble.
I can fix the desktop myself, but not the laptop. we went with the inspiron simply because the customer service.