Wires don't give you a bigger spark. They theoretically give a cleaner shot to the spark plug, but whatever ignition you get from the plug, you get from the plug.
Have never heard of anyone getting definite power from wires, coils or plugs... not unless they were being used to replace worn out wires, coils or plugs. OEM is fine for 99% of power builds.
1.8 coils have benefited some people, generally those with Boost...I think putting the coils on top of the spark plugs is just a bad idea....and the 1.8 setup looks better...
Yeah I think your right on the 1.8's being good and the Nology wires I know I've seen a few bad things written. My stock 2.0's are good for me at close to 300whp!