Rieke,
It does not matter what you fly for the assessment. They give you the profile and have you fly in what ever sim is available that day. You can fly any sim bad the first time you are in it and probably will. They know that. They are looking for good basic skills, good judgement and command presence. You must make good decisions. (do not try and land from the last approach. It has a 40 knot tailwind.) Those that tried to land failed. Make good briefs, good call outs and if you are off on you hdg/alt/loc/gs than just say out loud "correcting". This lets them know you are aware of what is going on around you. Use the other pilot like a pack mule. The more you have him do the better you will look.
If you get the 310 remember: It has lots of power, be ready for it. Even on the single engine missed approach you will need nose down trim and careful pitch control. The speed bleeds off very quickly. One motion with both hands: one is adding toga power, the other is adding nose down trim at the same time. And obviously, with lots of power, additional rudder is a must. It is not hard to do. Just be ready for it.
Regards,
330 Man