Spit14 is just awesome, you just got to know how to fly it! It is not a spit,5,8 or 16 so if you try and turn fight in it you will die in it. I see many say its useless under 12k, but once again you just have to know its capabilities. I love a fast 51 or tempest or la7 trying to jump me when down low, Their kill a perk ride light goes on and think a 14 down low = easy meat, but a break turn or 2 to equalize e then hit auto climb and go for a smoke, they aint going to catch you in the climb. Leads to more ropes than any other ride Ive tried. For less than 10 perks its a bargain compared to a temp or a 262 or a chog (eats chogs for brekky). So if anything, its perks should go up.
This plane suits my style, since arthritis prevents too much stick movement I have to bnz mostly, and the 14 is perfect for this role.
As said in the above posts, you virtually never see a 14, another advantage, since most don't know its strengths they try and fight it like other spits, and that lack of knowledge will get you killed, or at the very least will let me escape with kills under my belt. They are also great bomber interceptors since you can get to 20k in just a few minutes without burning a huge amount of fuel.