Tire Pressure makes a huge difference.
I was considering new tires due to a lot of slipping around corners in slightly muddy conditions. Even in dry dirt, I felt that the back tire would get away from me.
I was riding with 55 lbs and sometimes 50 lbs of tire pressure front and rear. Today I wanted to try something different. I lowered my pressure to 45 lbs and lowered my seat just about 1 inch. man what a difference in control. I went threw some mud on an angle and my bike cut right threw it. The bike felt tighter but loser. It had give which made it feel tighter. Hard to explain but if you experienced this , you know what I'm talking about.
My tires are Tioga Extreme 2.10 in the front and 1.95 in the rear. I was looking at the Tioga White tigers but I think I' am holding off until I play with these some more.
Today was the best control I ever had over my bike and man was it fun. My experience , well I'm still a rookie. I have now rode 200 miles on and off road. I just started riding about 3 months ago.