I'm not a huge fan of Special Forces. They make great "ego" units, but they cost a HUGE pile of gold to recruit and maintain.
Yeah, what of it? What else am I supposed to do with all the gold my character makes? I pass out gold by the hundreds to anyone that asks, and still have craploads left over.
Although, I did dump my SF unit to recruit 100 R4 archers to better fight monsters.
But if we had ranged SF, I'd totally recruit the biggest unit I could get.