Bar renko from data bid-ask or trade

Will seem like a simple question, but in your experience, for renko bar is better to use the data values from bid-ask or trade?
Let me explain ... I noticed that, as are made barrenko if usage data bid or ask or trade, the graphs are plotted otherwise.
So even the trend of system will be different.
That's why I ask you if you have experience and if you have done tests.
What are the best data to make barrenko and have little difference between the backtest and the real?

Thank You

Mauro

you ask... so I tell you:

I won't use renko at all.

Don't waste your youth.


YMMV

Thanks TJ for in your opinion.
Are still no answers my questions.

Regards

MB

Thinking about it, the same questions that I made above are valid for all charts "out of time" .. so even for Kagi, Point & Figure, etc., even including those in volume

In your opinion what are the best data (bid, ask, trade?) To plotare charts with bars not linked to time?

Regards

Mauro