Is a spare 35S a good idea or redundant?

[Logan]

Yeah, I have had keyboard problems too, after only three months of use and when going fast, sometimes it would skip entries. I really have to take my time and go back and press and check (never an issue with either of my 42s calculators). I also had random issues with vectors from time to time, which was important for me especially during the PE exam. I found the programming a bit restrictive because you only get 26 labels, etc. Once I finished the exam I immediately ditched it and went to the 42s. I do have a 32SII that I haven't sat down with yet.