Good info, I usually shoot through a chronograph but ocassionally at them. This is why I would not borrow this tool from others.
I do get annoyed with all the useless info they gather these days. Start / stop is good enough for me. I don't need the additional Brain clutter.
Perhaps it is just me but slowing things down a tad to make entries in my journal is fun.
I would say that most people don't need an expensive chronograph. An error of a few fps isn't going to make any difference to the majority of reloaders, but like a lot of hobby related things, people are willing to spend huge amounts to say that they own certain pieces of equipment.