In recent times there have been plenty of model makers producing models of competition cars - F1, Sports and GT cars. However, my personal preference is for models that were actually made for the toy market. Of course accuracy and authenticity vary, but there have, over the years, been some very appealing diecast models of race cars produced, ostensibly, for the children's market. Having said that I think some makers realised that there was also a potential adult market for their output- e.g. Solido racing cars proved quite popular with racing enthusiasts in the 1960s and I remember them being sold in the shop at Brands Hatch.
I start off with what I believe to be the only toy of a Lotus 30/40 that was made in period. It was produced in Spain by "Mini Gama", of whom I know little. I think it is a very good, well proportioned item. The odd thing though, on its box and base, it is described as a Ford GT40, which it quite obviously is not. Strange that the producers should go to the trouble of producing a pretty accurate model and then get the name wrong.