which platform

Chess is about visualization.
So visually use the platforms that appeals to you.

"Beauty is in the eye of the beholder"

Today you may find one platform appealing and tomorrow another.
The discussion is only a present view. Tomorrow has no reality.

"Visualization" does not refer to the graphic of the online website, or the chess board and pieces.

Visualization is the formation of a mental image of something.
Mentally feels more appealing a platform or a chess position.
Today I like this platform, tomorrow I don't know.

What I like most about chess.com's computer analysis is that it colorates the right moves that you've made in different degrees. For example, when you make an opening move, chess.com describes the opening move you made as correct. But lichess just gives you suggestion.

It's hard to call a move correct in chess. It isn't that black and white.