I'm planning on upgrading from my crummy current HDD to an SSD.
Currently looking at getting the Samsung 850 Pro 128GB ($130 on Amazon) and was wondering if anyone owned the 840 Pro/EVO and had any opinions on the performance?

My current HDD is a Seagate 500GB 7200RPM using a much older WD Blue 220GB 5400RPM as data storage. The plan is to migrate data over to the Seagate for storage and pretty much kill off the WD Blue as it's roughly 10+ years old by now.