Spark plug question?

[Donzi22zx]

I am changing my spark plugs in my 99 454 magnum EFI. I currently have NGK V powers in it, and I am installing A/C Delco MR43t, or MR43TS my question is which is better. The MR43T has a standard tip and the TS is a projected tip. I have herd the the TS is a better performance plug, anybody with experience please help. Is the NGK a good plug, I know they work well in a PWC, but when they go bad, they really go bad.

[Forrest]

NGK V-Power (UR-5) are great plugs and they are inexpensive, too. I use 'em in all my marine engines.