I bought some Kitech kits a few years ago and wasn't really that impressed with them .
The plastic was very grainy/pebbely and as others have said the decals are of very poor quality.
I built two F/A-18 Hornets , each kit gives you the option of a single or two seat fighter , but there is no canon port opening on top of the nose/fuselage section . So I built mine as adversary aircraft .
I also buit a AH-1Z Cobra prototype , it came out okay .
I have a F-16D in my stash to build . I also bought two EA-6B Prowlers but the canopy pieces were badly molded , so those two kits ended up in the spares box .
I doubt if I would buy any more , the Hornets looked like poor copies of what Italeri offer , the Prowlers were hasegawa Knock-off's and I think the Cobra is similar to what Hobbycraft offer .
HTH , John .