I had a magician in a short lived game who had two ally spirits at rating 4. They were not that special. But they were two hot smoking human females that I had given viper sliverguns and Clothing+Armored Trenchcoat. Essentially two extra guns at my beck and call – not to mention that I had given them some extra forms…
Note: This mas in SR3 so I dropped magic from 6 to 4.
1: Gigers Alien (pop inside the car of a pursued vehicle and scare the bejeezus out of the driver)
2: The Abominable Snowman (as above but KISS the driver)
3: A pigeon (no one will suspect a pigeon…)
4: Invisible Human form (can wear clothing, pick up stuff and do things)
5: Hot smoking female runner
6: Twin of the magician (Yea, I was in 3 places at once shooting at you)
7: A Lonestar cop (No one will suspect a Lonestar patrolling)
Etc.
I spend around 20 karma for both spirits for their multiple forms