I am using inspiron 15 3521 since 2012. Plus points of this laptops are 4gb ram, 1.90 ghz dual core processor, a good display, average cam ( works really good with dell webcam central, specially in video recording) , 15.6 display. Another plus point of this laptop is its mouse track pad, Very smooth. There is no issues with this laptop, performace is brilliant. I compared it with i3 laptops but my laptop didn’t disappoint me. Model of this laptop is very good, specially its front panel and branding with silver finish.