The Classes
There are four different classes of mages to choose from on Rolemaster: Magestorm. What you choose depends on your style of play. I hope to give enough information here to help make your decision easier.
The magician is the powerhouse of the 4 mage classes. High in power, weak in life though. With the lowest hit points of the 4 classes, it's a trade off between power and life.
The cleric is the medic of Magestorm. With their healing spells they are essential to having a good game. And with the most hit points of the 4 classes, they often live longer.
The mentalist is the escape artist of the 4 classes. With leaping spells they can get away from most sticky situations. And their fixed ley is a bonus, they don't need pools or shrines.
The arcanist is the only class with void spells and sign spells. They can suck power points and leave behind traps for others to fall into. A powerful foe in the higher levels.