The best recommendation is always to go to a seforim store and see what you like, there are so many criteria that one person's preference might not work for you. Personally I find that I learn best from full-size editions especially when trying to access the commentaries which are nearly always in smaller font. But your mileage may vary depending on your sight.
This being said, if helpful to you, you could consider an edition with vowels and punctuations such as Oz Vehadar's which are full-size. They also exist in an edition with mefarshim (e.g., Rosh, Rif, Ran) which has been printed on many but not all volumes yet.
For Tur and Shulchan Aruch see related answers here and there. Personally I have a full SA but only buy the Tur (Friedmann or Machon Yerushalayim) in areas I learn in depth.