My first was an expensive 'toy', Astak EZreader Pocket Pro.
The 'Toy' aspect lasted 1 book. This thing was light compared to a modern paperback. I could change the size of the print. And I could bring more than 1 title with me with no additional bulk.
I'm on my 4th (a Kobo), Previous, was a K4 (I had 2 Astak's)
I am even getting used to no buttons