The Monogram kit is very old but still a very nice one and is an easy build. The pit has great molded details.
The KH one I have heard horror stories about crappy fit and a pebbly rough finish on the plastic. I read a build review where the builder had one heck of a time getting things to properly fit and heavy use of putty. I can't remember where I read it. but I have stayed clear of it.
Here is my 1/48 Monogram that I made in NMF using Alclad and the kit decals and not one speck of putty was used. Click on the images for closeups.