First there was the Ti-10, then there was the Iso Ti SP SX. Both two very fine rackets in my opinion. But I was presented an Mp-77 recently. While super excited at the prospect of having a racket from the MP series to add to my collection, I was by the tiniest amount a bit disappointed as I didn't get the Mp-100 as my present! However, doesn't matter at all. I adjusted to the Mp-77 much faster than I did to my Iso Ti SP SX. While in one session or atleast during a set of games I prefer to stick to the same racket, I rotate thru all these 3 and find them a must requirement for any badminton player Go Yonex! Cheers!