Considering 35s acquisition

[Tugdual]

Thank you all for the feedback; I followed your recommendations and installed the 35s emulator (or is it a simulator?). To be fair it took me some time to actually see the bugs, more particularly the ones related to cos() and tan(). I don't think this would be too much of a problem.
On the other hand I was a bit surprised that I couldn't click repeatedly on keys but had to release them for like 20ms; I didn’t observe this while using the keyboard. How is the actual 35s?
Other question is while playing with the emulator, I was under the impression the calculator was generally slow. I was even surprised that the emulator (or simulator?) was that slow unless it is a good emulation with the actual timing. The 35s doesn’t use an ARM or a Saturn so I don’t really know how it performs in reality. Watching videos on YouTube I concluded that the 35s was slightly faster than the original 15C but a considerably slower than the 15C LE. Is that a fair statement to say that the 35s is pretty slow?