suggest system for gaming.

Solution
You really should give a BUDGET as the sky's the limit when you say "best."

For $1200 I could build a system with an i5-4670K and a GTX780 for example which kicks ass. Buying it pre-built would cost a lot more and pre-built's have annoying Warranty issues (don't open or void; return entire PC..).

For $200 less I'd get a GTX770 or possibly a new AMD card though I'm partial to NVidia cards for several reasons including the upcoming G-Sync monitors.

I suggest you give a budget or MIN/MAX and let some guys help with pcpartspicker. Specify exactly what it includes as well.

Again, building your OWN is definitely the way to go and there are many advantages.
You really should give a BUDGET as the sky's the limit when you say "best."

For $1200 I could build a system with an i5-4670K and a GTX780 for example which kicks ass. Buying it pre-built would cost a lot more and pre-built's have annoying Warranty issues (don't open or void; return entire PC..).

For $200 less I'd get a GTX770 or possibly a new AMD card though I'm partial to NVidia cards for several reasons including the upcoming G-Sync monitors.

I suggest you give a budget or MIN/MAX and let some guys help with pcpartspicker. Specify exactly what it includes as well.

Again, building your OWN is definitely the way to go and there are many advantages.
 
Solution


As I said, you need to give a budget not the other way around.

I gave you an example of a $1200 system with a GTX780. If that seems about right then set that as your budget. You or I can go to pcpartspicker and build a system out of parts but again I'm not about to do that without a budget.