OK
Gerpols. I know this company well. I have not flown for them, but have known many pilots who have.
They fly mainly 206, 208 and from what I remember a 406.
Fly mainly tourist/charter flights.
Arusha is great up till a point, expensive and suffer's small town syndrome. However from my time there, pilots are great and good fun, and place to be was the Masai Camp.
To your comment on whether they are 'good or bad', sounds like you have made up your mind. Pretty stupid comment to make. Look at some of the threads on here and see for yourself.
You will be worked hard etc etc
If you want more info, then please PM me, just be careful. Remember, in Africa there are quite a few jobs around at the mo.
Just my 2 SA cents worth
JL