Comfort is personal
The right chair depends on your height, habits and preferred sitting position. Sit for more than a moment before deciding. Your feet should feel supported, and you should be able to settle into the back without perching on the edge.
Think beyond the chair
A reading corner is a small arrangement of useful things. A lamp that directs light onto the page. A table close enough for a cup. A place to put your book when someone arrives. Together, these details make the seat easier to enjoy.
Give it a place in the room
A chair beside a window may be lovely in the morning and need a good lamp by evening. Notice glare, passing traffic and whether the view feels restful. The best position supports both the chair and the person sitting in it.
Make room for everyday pleasure
It can be tempting to spend the budget on pieces visitors notice first. I think a chair used every day deserves equal consideration. A home should reward the person who lives there, in small ways, every day.