dont know about the other two... but if you take your time and have patience with the Tamiya kit it'll pretty much build itself... just take your time and be gentle with it... they're all pretty much good kits from tamiya...
do you use Ambroids or Tenax? they've really helped me with kits as far as kit issues... it's a LOT easier to align the seams when you can tackle one tiny section at a time.. instead of putting cement on all at one time and praying it fits right... they're not cements so much as welders... it dries in seconds and is set in 10-15 seconds... so that small section of seam is stable you can go to the next.. instead of working to keep it all aligned.
the right glue can make bad kits a little less intimidating...
but back to your question... if you take your time, the Tamiya kit will surprise you how well it goes together!! and since you mentioned it, did I mentioned the obligatory pics you have to post of your build of it?
I think you'll like it... let us know what ya think!
P.S. it wouldnt be sacrilidge if you modded the C-100 kit... use your imagination!
I've had both good and bad experiences with AMT....