Wow! U just saw this...i have been using it now for few weeks too
Also try out www.coingecko.comwhich has a crypto-fiat calculator of any coin/token ypu select.
FYI: I also notice that livecoinwatch and coingecko live price analysis is faster and more real-timed than that of CMC which seem to refresh every few mins or so.
RE: An upgrade for cmc