Academy is a hit and miss....Here are the kits I've built (or attempted to build):
Mig-29: A bear to build. The front end is about 6 pieces that don't fit well together. Lots of filling and sanding and patience. I started the kit, became frustrated, and nearly tossed it. But, I toughed it out and got a great end result. So much so that I apparently thought I could subject myself to the process again by buying Academy's Mig-29 UB kit.
F-117A: Loved it....Went together smoothly and quickly. But there seems to be too much angle between the vertical tails, which is a problem I also had with the Revell kit.
Su-27: Also went together very well. Except for the area where the front intake joins the rear intake, which is a problem on any jet that has this type of engine (F-14's in particular).
Mig-21: I built mine so long ago, that I can't really comment. My skills were a lot cruder then, but I do remember that the front fuselage doesn't mate well with the rear fuselage. I have two more Academy Mig-21's, but haven't built them yet.
FB-111: A real stinker. I just couldn't get a decent mate between the fuselage halves. I remember something ended up breaking while I was feverishly trying to sand the seam and I tossed the kit in the garbage can. One of the few failures I've had.....
I've had great luck with Academy's World War II planes, but I've only built the F4U-1 Corsair and La-7 kits so far. I also have Academy's F-22 in the stash, but I haven't heard any complaints about it really...
As for the F-15E, get the Revell kit. It's cheaper and better quality! Edited comment....I see you didn't like the Revell F-15E. What didn't you like about it???
One good hour working on a model erases 8 bad hours at work!!