If money was not the object during production, Then Nissan would have built nothing but 400R's and Z Tunes. Just like any business in the world you put out the best you can with the budget you are told to follow. So I am sure the stock coilpacks are sufficient enough to get the job done, but in the same breathe I could say the Turbos are good enough to run up to 500 horse, and I've been runnin them for 15 years no problems stick with stock, Same argument. People run out and buy the best Turbos and Titanium exhausts and all this other stuff but wont drop a cent for probably the most important system in the engine, Ignition. With out Ignition you can't set it off, and Okadas happen to be the best in the world at the moment for Ignitions on the RB26DETT. Instead of listening to othe people, do some research, got to different sights and read, go to MSD, ACCEL, SPlitfire, Mallory, learn and understand what a Multiple Dicharge system does and why, then go to Okadas site and read up.
Um, you need to look at it this way,
I need new coils
The oem ones cost x
Splitfire cost x
Yes the factory ones are fine but if they are twice the price of splitfires, then its pretty obvious.
Like I have said more than once already , the HKS drag car ran factory coils , that seemed to go ok ....