Turkish offers a very solid all around product. They are definitely a cut above their competition, offering menus, slippers and amenity kits even in economy. My sole complaint about the onboard product is the KSML. It seems that the food is always awful when departing Turkey as TK insists on sourcing the good locally. In terms of ground product, I think it may be smart to operate 2 lounges on both sides of the terminal rather than one large one. It would also be nice if the lounge had a spa.