Which of these 3 spark plugs the best for my engine?

[lancerevo]

Which of these 3 spark plugs the best for my engine? They are all NGK. model numbers from the left are. bpr5es, bpr6es, b7es. I have a kia pride with a b3 engine. Not stock at all. Cold air intake removed the stock air box and added a cone filter & rear exhaust muffler removed.

[91blufestiva]

Well, idk what number for you to use, but, I surely hope you aren't going to be using any of those spark plugs pictured! They look just a tad worn

[Gforcefd]

I am a little confused have you run all 3 in your car on the same cylinder and you want to compare how they look?

I would think all 3 are basically the same plug so it wouldn't make a huge difference. Is one made out of iridium, one copper, and one titanium?

[jglutz]

champions or autolites every year...they're cheap enough

[lancerevo]

I have bought a set of NGK bpr6ey. V-power.

[CharlieZ]

Why not go directly to the source?

http://www.ngksparkplugs.com/part_finder/car_truck_suv/default.asp?mode=nml

[CharlieZ]

^^ my post above. Sorry, I think you were asking which color tip is the right one. Based on color charts I have and discounting the ambiguity of colors I see on my screen, I would pick the "tan" color - center plug in either photo.