That's kind of in my wheelhouse. There is no objectively or statistically better deal, otherwise it would be arbitraged away in a liquid option chain like TSLA's, especially right before earnings.
One can be subjectively better than the other, though, depending on your expectation of TSLA's stock price and your risk tolerance.
Let's say you decide to risk (gamble) $4000 on the expectation that TSLA will fall after next week's earnings. You could buy 2 contracts of the 175 put, or 5 contracts of the 157.50 put. Below are P/L graphs of both positions, at expiration April 26, and on April 24, at the open after earnings (with unchanged IV, which may only be realistic for the first minutes of April 24, probably IV will drop and the options worth a bit less than modeled).
You can see that if TSLA either surges or drops a lot, the 157.50 put is superior (max loss is capped at $4000, but max profit is much higher due to more contracts). However you have to be right about a large downmove.
The 175 put is "safer" between 150 and 175, and has, as you noted, a higher breakeven - at the cost of each dollar invested not making as much should TSLA drop like a rock to $120.