[max51]

For a power user, There is nothing even remotely comparable to Excel that exists today.

[dh2022]

Not anymore. Today I tried to copy paste a string of 15 ascii characters into an Excel cell. Excel spun around for 20 seconds then blurted out an error that "the data is too big". I hit F2 (enter cell Edit Mode), pasted the 15 characters in the edit window and this was I was able to get the data in the cell.

Excel has gone downhill massively.

[max51]

Can you name a single product that is comparable?

If it doesn't have something equivalent to Pivot Tables, it's not even worth talking about.