I used to have MAJOR problems with the La7, until I learnt that if you fight one above 5000 feet, his major advantage speed is reduced dramatically.
The one thing I dont understand is why the Spix 14 is so expensive at 60 Perks. Many thousands fought in Europe with the 109G10 Dora and 109K. As soon as the enemy sees the big SPIT14 icon, everyone wants a piece of you.