I like Muwahid and even more than Saracen.

Muwahid is cheaper to get (225 vs 300), cheaper to maintain, slightly faster run (12 vs 10) and charge (13 vs 11), much higher morale (4 vs 0). The lack of armour (1 vs 3) and negative defense stat (-1 vs 3) may put it in detriment of the better charge (7 vs 5) and melee (1 vs -1).

Get Muwahid away from enemy fire (so the lack of armour doesn't show), use them on flanking (make use of their strong attack and better morale), produce them in province that has armour workshop, use them more often in battle to get their valour up (and they tend to get valour up faster than Sarecen) to improve their defense, are a few techniques to compensate for their fragility.

Handle with care (same as other Muslim faction units), but they will delight you of what they could do.

I tend to put the Saracen in front line to engage the enemy and absorb arrows while flank with Muwahid and Ghazi.

Annie