Depending on what you want, the Maisto "kit" cars may be enough.
Be aware though, that the quality of detail in the moulding is not going to match up to a plastic kit's, the paint will not be as good as one you can achieve with a bit of practice and as said before, it isn't really much of a kit if what you want is something to build.
If what you want is a decent replica of a car by way of a die-cast, there are much better but they do come with a price tag.
If what you want is a kit, only a kit will do.
On a related note, sometimes, there simply isn't a kit of a car you want to have a model of and a die-cast is often the only way to go. There are a couple of examples of die-cast cars having been re-worked to improve the finish/appearance and some even use a die-cast car as a starting point for modifications.
These die-cast "kits" also serve as a good starting point in casting a decent copy of the body where there isn't a plastic kit of a car you may be after.
Have a look in the completed forum for examples of members' finished Fujimi Lamborghini Murcielago models and have a look at the Maisto car. You'll easily see the difference in the quality of finish.
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