My friend was building a computer so we went through a bunch of components to figure out what he should make. Here is the current list of what I think makes a great mid priced PC ($1600ish). Its not far from my current PC newer CPU, GPU and more power.
CPU: Intel Core i7-2700K Sandy Bridge 3.5GHz (3.9GHz Turbo)
Motherboard: ASUS P8Z68-V
Memory: CORSAIR Vengeance 16GB
Graphics: EVGA GeForce GTX 570 HD
OS/Software Drive: Intel 510 Series 120GB SATA III
Data drives (buy 1 or 2): Western Digital Caviar Black 1TB
Power Supply: PC Power and Cooling Silencer 910W
DVD/blue ray cheapest one, whatever you need drive
Case... its kinda up to you on how you want it to look. This is the case I have, cheap and works fine.
Antec Three Hundred Black Steel ATX Mid Tower
OS/Software Drive: Intel 510 Series 120GB SATA III
Data drives (buy 1 or 2): Western Digital Caviar Black 1TB
Power Supply: PC Power and Cooling Silencer 910W
DVD/blue ray cheapest one, whatever you need drive
Case... its kinda up to you on how you want it to look. This is the case I have, cheap and works fine.
Antec Three Hundred Black Steel ATX Mid Tower