I use Type 25 only and have a 1.76 K/D (I play team deathmatch Core only)
So, I must say, it is a great gun. I actually think it is the best gun in the game, thus why I use it.
I occasionally use the MP7 & vector, if it is a map that will have mostly close encounters & few long distance opportunities.
But, primarily stick with the Type 25. It is great for hip fire at close range and great for long range killing as well.
Ya I have been running the Type 25 the last couple days and it is now easily my favorite gun. I use it with laser sight, stock & reflex(cause I like the mustache reticle) and seem to do better than I do with most other weapons. Its pretty good off the hip with the laser sight and when ADSing very little recoil