Don't even think about comparing crappy UA with excellent TK.
While people occasionally moan on this forum about TK, IAH flights are operated by brand new B777's, meals are great, booze is for free, IFE is world class.
+1
flew to LAX JFK IAH with TK with the new B777's , even flew to JFK 3 years ago with the leased B777 from Jet Airways. Amazing food & IFE, service could be a bit better though
my only disappiontment recently was the ORD flight bothways with A340-300 ( 3 years ago )