Board Thread:Game Discussion/@comment-35320902-20180514003545/@comment-28169398-20180514032121

Your initial question was a bit confusing because you mentioned RTLM and EK.

The Nismo is less expensive to upgrade than the 2015 Porsche. The Audi is the least expensive, but isn't on sale.

You also do not say how far away you are from RTLM. If you are still in Master or Elite, then sure, buy the Nismo. If you are at Spirit Of Ferrari or Zenith Series, then wait and get to RTLM.