Either the SU-27 or the F-18 are good choices......
Of note... some years ago Alex (AKM owner) built and enjoyed the old Direct Connection F-18 (now the Juno F-18). He learned a great deal from that plane, and subseqently the AKM Mig and Su are build using similar construction.
Both kits are very good. And you will have pleanty of help/guidance right here if you require it.
Both Alex from AKM and Derek from Juno requent this forum as well.
Personally, I kinda like the F-18 myself
Just an american thing I think [sm=sunsmiley.gif]
As Cyclic noted, don't overlook the Juno F-20 - its a real nice plane too.