Share 'What is the Big Deal with polyester strings?'

I have been out of the tennis strings network for years. Now all I hear is about Polyester strings. Is it much different than Prince PolyPlus? It was stiff and difficult to string with, almost like gut, but I never played with it. I've played with Technifibre 515 for many years. Now discontinued, I use NRG2. Any real benefits with the likes of Luxilon Big Banger and such? Who is best suited to th…