The first thing you must consider is what style of door best suits your preferred design aesthetic. You may prefer the more contemporary look of the tilt and turn doors - or a mix of modern and classic of the floor to ceiling French doors. Also consider if the door will be a focal point of the room, and how a double vs. a single door will affect furniture placement.
Patios and furnished outdoor living spaces are now considered a fully-functioning extension of your home. This means that how you plan to use your outdoor space, will influence the type of door you require. If you will have a lot of traffic in and out of your home, or plan to move large furniture in and out seasonally - double French doors may be the best way to go. If you are only in need of an additional exit or entrance, or your room is small - tilt and turn doors may be the better fit.
Any new glass patio door added to a room will improve natural lighting, but you must consider how much light you prefer. Tilt and turn doors are an excellent way to create a wall of light, with some doors that you plan only to tilt - and some you use as an entryway. While French double doors won’t cover an entire wall, you may be able to line them with decorative windows to allow in more light. Either way, the structure of your home may limit your options.
It’s almost impossible to purchase a modern door that isn’t energy-efficient. This helps to reduce energy costs, and even to protect your interior furniture and accessories from sun fading. However, you must also consider airflow and security. If you are adding a double French door to improve airflow, consider how comfortable you are leaving one or both doors open screen-free. If security is of greater concern, or to increase airflow when you aren’t home - the 'tilt' of a tilt and turn door may be the better way to go.