HP-67 versus TI-58

[Josef]

I have not tested dropping HP calculators on the ground, I believe they are more robust, however, they suffer from the same failures as Texas Instruments. I find the execution of the electronics to be less professional with HP than Texas Instruments. When you compare the size of the SR-52 and the HP-65, you can see that the TI is indeed significantly larger and heavier. However, the price of the HP-65 was $795 (equivalent to $4,920 in 2023). TI was making cheaper calculators, and thus there was a saving to be made. As we see on eBay HP calculators are significantly more expensive than TI's, which I would say are still losing value.

I personally really like the HP design, although it's not as clear as on the TI, because of this, the calculator could have significantly more features.