KMP is redoing theirs to be fully composite. Should be available again by Xmas. I have one and they are really nice. 73.5" wingspan. Mine has the built up wings with fiberglass fuse and tail feathers. The new version will have fiberglass wings as well.

A smaller ME-109 thats also pretty good is the Kyosho Me-109. It has provisions for retracts. I put retracts in mine. Its only 56" ws though. CMP is coming out with one soon, but no release date yet.
VQ has an ME-109 at 61", but, I myself dont like the way it looks. VQ does make a really nice P-40, but the ME-109 they offer is not so great IMO.

1st pic is of my KMP Me-109 in progress.
2nd pic is my Kyosho Me-109