Question: I came across a bar that sounds like this while transcribing a piece for keyboard. Is there a correct/better way to write this?

[![it sounds like this](https://i.stack.imgur.com/3R2AN.png)](https://i.stack.imgur.com/3R2AN.png)

Answer: 
Just based off of the span of these pitches, most players can't play all of these pitches with one hand (assuming either a B♭–D or B–D♯ span).

As such, I would argue that pedaling is the best bet. Just write the pitches as normal eighth notes, but indicate to the player to hold down the pedal, thereby sustaining the pitches until the pedal sign changes:

[![enter image description here](https://i.stack.imgur.com/YClKl.png)](https://i.stack.imgur.com/YClKl.png)

It's true that pedaling could muddy up the melody notes in the right hand (depending on how active they are), but an accomplished pianist should be able to use pedal without sacrificing melodic clarity.

If the right hand is too much for the pedal, you could also clear up the notation by using simple eighth notes (as in the above example) but with a text indicator to the performer: "sustain all left-hand pitches for the duration of the measure."

PS: How funny that [When piano pedalling seems to conflict with the original score](https://music.stackexchange.com/q/115473/21766) was asked almost simultaneously with this one, since it connects with my answer exactly.
That's the way I've seen it. Obviously a wavy line won't do the job, a player would play the notes too quickly in succession.

The other way would be to write the lowest note as full value, and write as SATB, using rests before each of the other notes, which would then have their own appropriate values, losing a quaver each time in your example. But that's even messier.

Or - write out the first 3 quavers consecutively, each tied across to those same notes to, say, a minim chord to fill the bar. It's not technically correct, but tidies it all up, and the expected result is more than apparent.