I hate the engine nozzles on the F-15A before they were removed. They look just odd, but having grown up seeing both, I always prefered the ones without turkey feathers. The 3rd Wire F-15 is nice but I prefer the ones wpnssgt and I did and the ones the MF did. Avionics are much more advanced and correct than the stock ones.
From Joe Baugher
After being stationed at Sheppard AFB for 4 years in the squadron that trained fighter crew chiefs, there were some civilian instructors who worked on the A with turkey feathers, and they cussed them and added a few other colorful words to describe them. One instructor said those turkey feathers added 3.5 hours of extra maint per one hour of flight time. I would assume they would get beat up badly when then F-15 went to full burner and had to be replaced often.