We have eaten at 58, both lunch and dinner. Try to get a seat near the window for the best views. The food is not exceptional and it's "touristy" because it's in the Eiffel Tower. I don't know how else "touristy" would apply, though. Once inside, it's a restaurant, undoubtedly filled with more tourists than Parisians, but that wasn't really an element in our dining experience. If not for that exceptional setting, the price for a comparable meal would be much less.
In Paris, the sky's the limit for restaurant ratings and prices, so you will certainly hear of restaurants with better reputations and higher prices. I don't know your background, tastes or budget but I think eating at 58 could deliver a memorable birthday dinner for a lot of people.
You might consider Le Ciel de Paris, in the Montparnesse Tower. It has an excellent view of the Eiffel Tower. It's pretty nice to see it light up on the hour at night. We thought the food was very good and well presented and the staff was friendly and attentive. As I recall, it was more expensive than 58 Tour Eiffel.
We'll go back to Le CIel again and I think you would enjoy it for your birthday.